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MBLEx Exam Practice Quiz

115 Questions
Mblex Quizzes & Trivia

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Questions and Answers
  • 1. 
    The skeletal system is composed of bones, cartilage, ligaments and joints.
    • A. 

      True

    • B. 

      False

  • 2. 
    The fibrous membrane covering bone that is the bone's life support system is called the intraosteum.
    • A. 

      True

    • B. 

      False

  • 3. 
    The two regions of the skeleton are the axial and the appendicular skeleton. 
    • A. 

      True

    • B. 

      False

  • 4. 
    The bones of the skull, thorax, and vertebral column and the hyoid bone comprise the appendicular skeleton.
    • A. 

      True

    • B. 

      False

  • 5. 
    One of the functions of the skeletal system is to restore vital minerals. 
    • A. 

      True

    • B. 

      False

  • 6. 
    The intercartilaginous ligament is a tough membrane that interconnects select bones, attaching to their periosteum.
    • A. 

      True

    • B. 

      False

  • 7. 
    • A. 

      True

    • B. 

      False

  • 8. 
    The two girdles in the axial skeleton are the shoulder girdle and the pelvic girdle. 
    • A. 

      True

    • B. 

      False

  • 9. 
    The plane that divides the body into superior and inferior halves is the... 
    • A. 

      Midsagittal (median) plane

    • B. 

      Frontal (coronal) plane

    • C. 

      Transverse (horizontal) plane

    • D. 

      Sagittal plane

  • 10. 
    The plane that divides the body into anterior and posterior halves is the...
    • A. 

      Midsagittal (median) plane

    • B. 

      Frontal (coronal) plane

    • C. 

      Tranverse (horizontal) plane

    • D. 

      Sagittal plane

  • 11. 
    If you were to assume the anatomical position, you would do which of the following?
    • A. 

      Lie face down with both feet hip distance apart, toes pointing downward

    • B. 

      Lie flat on your back, with the palms of your hands flat on the floor and your head looking over your right shoulder

    • C. 

      Stand erect and face forward, with your palms facing forward with the thumbs to the side, and your feet about hip distance apart with toes pointing forward

    • D. 

      Stand erect and face forward, with your palms facing each other and feet about hip distance apart with the toes pointing to the side

  • 12. 
    Which of the following is in the proper order from least complex to most complex?
    • A. 

      Cells, tissues, membranes, organs, organ systems, organism

    • B. 

      Cells, chemicals, organs, tissues, organ systems

    • C. 

      Chemicals, cells, tissues, organs, organ systems, organism

    • D. 

      Molecules, tissues, cells, organism

  • 13. 
    What is the fundamental unit of all living organisms?
    • A. 

      Atom

    • B. 

      Molecule

    • C. 

      Tissue

    • D. 

      Cell

  • 14. 
    Which of the following quadrants contains the liver?
    • A. 

      Left lower quadrant

    • B. 

      Left upper quadrant

    • C. 

      Right lower quadrant

    • D. 

      Right upper quadrant

  • 15. 
    When oriented away from the midline of the body, we refer to it as...
    • A. 

      Lateral

    • B. 

      Anterior

    • C. 

      Posterior

    • D. 

      Inferior

  • 16. 
    ________ describes the armpit region. Blank is... 
    • A. 

      Axillary

    • B. 

      Antebrachial

    • C. 

      Brachial

    • D. 

      Antecubital

  • 17. 
    The Greek root derm- means... 
    • A. 

      Skin

    • B. 

      Follicles

    • C. 

      Nails

    • D. 

      Hair

  • 18. 
    Which of the following cells gives color to the skin and serves to decrease the amount of ultraviolet light that can penetrate into deeper layers of the skin?
    • A. 

      Keratinocytes

    • B. 

      Mesocytes

    • C. 

      Astrocytes

    • D. 

      Melanocytes

  • 19. 
    Which layer is known as the true skin?
    • A. 

      Epidermis

    • B. 

      Subdermis

    • C. 

      Dermis

    • D. 

      Hypodermis

  • 20. 
    Collagen and elastin are found in which layer of skin?
    • A. 

      Epidermis

    • B. 

      Dermis

    • C. 

      Hypodermis

    • D. 

      Mesodermis

  • 21. 
    Which are pouch-like structures in the skin from which hair grows?
    • A. 

      Follicles

    • B. 

      Indentions

    • C. 

      Sacs

    • D. 

      Cysts

  • 22. 
    What is another term used to describe the subcutaneous layer?
    • A. 

      Epidermis

    • B. 

      Hypodermis

    • C. 

      Subdermis

    • D. 

      Mesodermis

  • 23. 
    Which layer of skin contains blood vessels, many nerve receptors, hair follicles, and skin glands?
    • A. 

      Epidermis

    • B. 

      Mesodermis

    • C. 

      Hypodermis

    • D. 

      Dermis

  • 24. 
    Which receptors are often called the "cold receptors"?
    • A. 

      Pacinian corpuscles

    • B. 

      Ruffini end organs

    • C. 

      Krause end bulbs

    • D. 

      Meissner's corpuscles

  • 25. 
    Which skin region is relatively avascular?
    • A. 

      Epidermis

    • B. 

      Dermis

    • C. 

      Hypodermis

    • D. 

      Endodermis

  • 26. 
    The hollow space within the center of the diaphysis is...
    • A. 

      Haversian canal

    • B. 

      Volkman's canal

    • C. 

      Periosteal cavity

    • D. 

      Medullary cavity

  • 27. 
    What is the long cylindrical shaft of the bone?
    • A. 

      Epiphysis

    • B. 

      Diaphysis

    • C. 

      Bony markings

    • D. 

      Periosteum

  • 28. 
    What are the two ends of a long bone?
    • A. 

      Epiphyses

    • B. 

      Diaphyses

    • C. 

      Surface markings

    • D. 

      Periosteum

  • 29. 
    Minute vascular canals running longitudinally down the bone are the...
    • A. 

      Volkman's canals

    • B. 

      Periosteal cavities

    • C. 

      Medullary cavities

    • D. 

      Haversian canals

  • 30. 
    What is a meeting place for bones at which joint movement occurs?
    • A. 

      Periosteum

    • B. 

      Hemopoiesis

    • C. 

      Diaphysis

    • D. 

      Articulation

  • 31. 
    Small, round bones embedded in tendons are classified as which of the following categories?
    • A. 

      Flat

    • B. 

      Irregular

    • C. 

      Short

    • D. 

      Sesamoid

  • 32. 
    Which of the following systems of canals connects to Haversian canals and runs horizontally through bone?
    • A. 

      Golgi canal

    • B. 

      Volkman's canal

    • C. 

      Osteal canal

    • D. 

      Medullary canal

  • 33. 
    Freely movable joins are classified as...
    • A. 

      Synarthrotic

    • B. 

      Amphiarthrotic

    • C. 

      Diarthrotic

    • D. 

      Triarthrotic

  • 34. 
    Hip and shoulder joints are examples of synovial joints that offer the greates range of motion and are commonly know as...
    • A. 

      Hinge joints

    • B. 

      Pivot joints

    • C. 

      Saddle joints

    • D. 

      Ball and socket joints

  • 35. 
    Medial or inward rotation of the forearm is called... 
    • A. 

      Pronation

    • B. 

      Inversion

    • C. 

      Supination

    • D. 

      Eversion

  • 36. 
    Flexion of the foot dorsally so that the toes are moving toward the shin is called...
    • A. 

      Plantarflexion

    • B. 

      Dorsiflexion

    • C. 

      Inversion

    • D. 

      Eversion

  • 37. 
    • A. 

      Eversion

    • B. 

      Circumduction

    • C. 

      Inversion

    • D. 

      Rotation

  • 38. 
    Circular movemnt created when a bone moves around its own central axis is called... 
    • A. 

      Rotation

    • B. 

      Protraction

    • C. 

      Circumduction

    • D. 

      Retraction

  • 39. 
    The sarcoplasmic reticulum stores and releases which ion?
    • A. 

      Phosphorus

    • B. 

      Potassium

    • C. 

      Sodium

    • D. 

      Calcium

  • 40. 
    Which of the following is the term used to describe the opposing muscle that relaxes and stretches or eccentrically contracts to allow the actions of the agonists to occur?
    • A. 

      Agonist

    • B. 

      Synergist

    • C. 

      Antagonist

    • D. 

      Fixator

  • 41. 
    What is the theory that explains how filaments within the sarcomere slide past each other in order to create a change in muscle length?
    • A. 

      Gliding filament theory

    • B. 

      Sliding theory of contraction

    • C. 

      Telescoping theory

    • D. 

      Sliding filament theory

  • 42. 
    Which of the following is the thin myofilament?
    • A. 

      Actin

    • B. 

      Epimysium

    • C. 

      Myosin

    • D. 

      Fasciculi

  • 43. 
    Which is a skeletal muscle's contractile unit?
    • A. 

      Fasciculi

    • B. 

      Sarcomere

    • C. 

      Perimysium

    • D. 

      Retinacula

  • 44. 
    Which is the fascial covering of the entire muscle?
    • A. 

      Perimysium

    • B. 

      Epimysium

    • C. 

      Endomysium

    • D. 

      Aponeurosis

  • 45. 
    Which of the following is the thick myofilament?
    • A. 

      Actin

    • B. 

      Fasciculi

    • C. 

      Myofascial

    • D. 

      Myosin

  • 46. 
    Which are the two ends of a sarcomere?
    • A. 

      A-bands

    • B. 

      Z-lines

    • C. 

      S-lines

    • D. 

      H-bands

  • 47. 
    What percentage of blood is plasma?
    • A. 

      30%

    • B. 

      45%

    • C. 

      55%

    • D. 

      70%

  • 48. 
    • A. 

      It is warmer than the rest of the body

    • B. 

      Viscous fluid that is thicker and more adhesive than water

    • C. 

      Color varies from bright scarlet to dull maroon

    • D. 

      PH is slightly acid

  • 49. 
    Which ABO blood type is called the universal recipient?
    • A. 

      Type AB

    • B. 

      Type O

    • C. 

      Type A

    • D. 

      Type B

  • 50. 
    Which ABO blood type is called the universal donor?
    • A. 

      Type AB

    • B. 

      Type O

    • C. 

      Type A

    • D. 

      Type B

  • 51. 
    Which of the following are the superior hollow heart chambers?
    • A. 

      Atria

    • B. 

      Ventricles

    • C. 

      Bladders

    • D. 

      Papilla

  • 52. 
    • A. 

      In the liver and the spleen

    • B. 

      In the hepatic portal system

    • C. 

      In the red bone marrow of long, flat, and irregular bones

    • D. 

      In the aorta

  • 53. 
    Which valve lies between the left ventricle and the aorta?
    • A. 

      Tricuspid valve

    • B. 

      Aortic semilunar valve

    • C. 

      Pulmonary semilunar valve

    • D. 

      Bicuspid valve

  • 54. 
    Which of the following is the left atrioventricular valve, also called the mitral valve?
    • A. 

      Tricuspid valve

    • B. 

      Pulmonary semilunar valve

    • C. 

      Tricycle valve

    • D. 

      Bicuspid valve

  • 55. 
    Which of the following best describes the amount of blood ejected from the left ventricle during each contraction?
    • A. 

      Blood pressure

    • B. 

      Stroke volume

    • C. 

      Pulse

    • D. 

      Hemostasis

  • 56. 
    What is the acronym used to denote the number of ventricular contractions per minute?
    • A. 

      HBP

    • B. 

      BPM

    • C. 

      DJD

    • D. 

      COM

  • 57. 
    Which of the following represents a normal blood pressure reading for adults?
    • A. 

      80/120 mm Hg

    • B. 

      120/80 mm Hg

    • C. 

      139/94 mm Hg

    • D. 

      140/95 mm Hg

  • 58. 
    Which is the only artery that transports deoxygenated blood?
    • A. 

      Coronary

    • B. 

      Mesenteric

    • C. 

      Pulmonary

    • D. 

      Splenic

  • 59. 
    What is a synonym for windpipe?
    • A. 

      Trachea

    • B. 

      Pharynx

    • C. 

      Larynx

    • D. 

      Epiglottis

  • 60. 
    What are the main organs of respiration?
    • A. 

      Intercostals

    • B. 

      Nostrils

    • C. 

      Bronchi

    • D. 

      Lungs

  • 61. 
    Which of the following are tiny sacs attached to alveolar ducts?
    • A. 

      Epiglotis

    • B. 

      Meatus

    • C. 

      Alveoli

    • D. 

      Bronchioles

  • 62. 
    Where are the vocal cords located?
    • A. 

      Trachea

    • B. 

      Pharynx

    • C. 

      Larynx

    • D. 

      Epiglottis

  • 63. 
    Olfaction refers to which sense?
    • A. 

      Taste

    • B. 

      Vision

    • C. 

      Hearing

    • D. 

      Smell

  • 64. 
    Which cells produce mocus?
    • A. 

      Lacteals

    • B. 

      Goblet cells

    • C. 

      Peyer's patches

    • D. 

      Mucosal tonsils

  • 65. 
    What is the port of entry for air as well as the beginning of the air conduction pathway?
    • A. 

      Chest cavity

    • B. 

      Lungs

    • C. 

      Oropharynx

    • D. 

      Nose

  • 66. 
    Which of the following is referred to as the guardian of the airways?
    • A. 

      Trachea

    • B. 

      Epiglottis

    • C. 

      Pharynx

    • D. 

      Larynx

  • 67. 
    What is a synonym for throat?
    • A. 

      Trachea

    • B. 

      Epiglottis

    • C. 

      Larynx

    • D. 

      Pharynx

  • 68. 
    Which of the following is the process by which products of digestion move into the bloodstream or lymph vessels, then into the body's cells?
    • A. 

      Ingestion

    • B. 

      Digestion

    • C. 

      Absorption

    • D. 

      Incorporation

  • 69. 
    What is the process of orally taking materials into the body such as food, liquids, and oral medications?
    • A. 

      Ingestion

    • B. 

      Intake

    • C. 

      Digestion

    • D. 

      Absorption

  • 70. 
    What is the process of eliminating indigestible or unabsorbed material from the body?
    • A. 

      Digestion

    • B. 

      Eradication

    • C. 

      Purging

    • D. 

      Defecation

  • 71. 
    Which of the following best describes a muscular ring used to regulate movement of materials from one compartment of the gastrointestinal tract to another?
    • A. 

      Orbicularis gius

    • B. 

      Sphincter

    • C. 

      Rugae

    • D. 

      Villi

  • 72. 
    Movements that mix and propel food through the alimentary canal are called...
    • A. 

      Peristaltic

    • B. 

      Dynamic

    • C. 

      Tonic

    • D. 

      Isometric

  • 73. 
    What is a ball-like, masticated lump of food once swallowed?
    • A. 

      Mastastocyte

    • B. 

      Wadous

    • C. 

      Bolus

    • D. 

      Chyme

  • 74. 
    The oral cavity includes which of the following groups?
    • A. 

      Tongue, oropharynx, esophagus

    • B. 

      Tongue, teeth, gums, opening of the salivary ducts

    • C. 

      Duodenum, jejunum, ileum

    • D. 

      Tongue, teeth, opening of the sinuses

  • 75. 
    What is a synonym for the word chewing?
    • A. 

      Peristalsis

    • B. 

      Mastication

    • C. 

      Ingestion

    • D. 

      Deglutition

  • 76. 
    What is the muscular tube that connects the pharynx to the stomach by piercing the diaphragm?
    • A. 

      Duodenum

    • B. 

      Trachea

    • C. 

      Esophagus

    • D. 

      Ileum

  • 77. 
    Which of the following is a J-shaped organ bound at bond ends by sphincters?
    • A. 

      Pancreas

    • B. 

      Stomach

    • C. 

      Duodenum

    • D. 

      Gallbladder

  • 78. 
    What is found at the junction between the esophagus and stomach?
    • A. 

      Cardioesophageal sphincter

    • B. 

      Ileocecal sphincter

    • C. 

      Sphincter of Oddi

    • D. 

      Pyloric sphincter

  • 79. 
    Which is the first section of the small intestines?
    • A. 

      Duodenum

    • B. 

      Esophagus

    • C. 

      Jejunum

    • D. 

      Ileum

  • 80. 
    What is suspended from the inferior portion os the cecum?
    • A. 

      Taenia coli

    • B. 

      Vermiform appendix

    • C. 

      Kupffer's cells

    • D. 

      Sinusoids

  • 81. 
    Which portion of the colon continues from the cecum up the lower right abdomen?
    • A. 

      Ascending colon

    • B. 

      Sigmoid colon

    • C. 

      Transverse colon

    • D. 

      Descending colon

  • 82. 
    Which of the following is the main muscle of respiration?
    • A. 

      Intercostals

    • B. 

      Scalenes

    • C. 

      Respiratory diaphragm

    • D. 

      Abdominals

  • 83. 
    Muscle cell shaped like "Y" of "H"
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 84. 
    Muscle cell that is multinucleated
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 85. 
    Muscle cell adapted for long, sustained contractions
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 86. 
    Muscle cell which its many nuclei are located near the periphery of the cell
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 87. 
    The shape of this muscle cell allows them to fit together and create the spherical shape of a hollow organ
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 88. 
    Also referred to as visceral muscle
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 89. 
    Muscle cell that is cigar shaped
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 90. 
    Muscle cell that contains bands of red and white material, causing it to appear striated
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 91. 
    Muscle cell that forms the walls of hollow organs and tubes, such as the stomach, bladder, uterus, and blood vessels.
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 92. 
    Muscle cell located in the heart wall
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 93. 
    Muscle cell that consumes very little energy
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 94. 
    Muscle cell that is also known as voluntary muscle or striated
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 95. 
    Muscle cell that contain intercalated disks between each muscle cell
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 96. 
    Muscle cell that is spindle shaped (pointed at both ends)
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 97. 
    Muscle cell that contains one oval-shaped nucleus
    • A. 

      Smooth muscle

    • B. 

      Skeletal muscle

    • C. 

      Cardiac muscle

  • 98. 
    Respiration that occurs in the lungs 
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 99. 
    Respiration in which carbon dioxide diffuses from the cells into the bloodstream
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 100. 
    Respiration that is also referred to as pulmonary respiration 
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 101. 
    Respiration in which oxygen diffuses from the air inside the alveoli across the alveolar walls into the blood capillaries
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 102. 
    Respiration in which gas exchange between the blood and the air in the alveoli take place
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 103. 
    Respiration in which oxygen diffuses from the blood into the cells
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 104. 
    Respiration that occurs between blood and body tissues
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 105. 
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 106. 
    Respiration that is also referred to as tissue respiration
    • A. 

      External respiration

    • B. 

      Internal respiration

  • 107. 
    Receives blood from all parts of the body except the lungs 
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 108. 
    Delivers blood to the right ventricle
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 109. 
    Contains the thickest heart wall
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 110. 
    Receives blood from the right atrium
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 111. 
    Receives blood from the pulmonary veins
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 112. 
    Pumps blood through the pulmonary trunk and into the pulmonary arteries
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 113. 
    Receives blood from the superior and inferior vena canae and the coronary sinus
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 114. 
    Pumps blood into the aorta
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 115. 
    Delivers blood into the left ventricle
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle