A&P Exam 3

1. Which of the following muscles would be involved to produce horizontal wrinkles in the forehead?

The zygomaticus major

The orbicularis oris

The orbicularis oculi

The frontalis

The masseter

2. The is an example of a neck "flexor" while the is an example of a neck "extensor"

Sternocleidomastoid, trapezius

Scalenes, rhomboids

Zygomaticus minor, splenius capitis

Supraspinatus, trapezius

Sternocleidomastoid, buccinator

3. Which of the following connective tissues surrounds the individual muscle cell or fiber?

Perimysium

Epimysium

Endomysium

Fascia

Elastic cartilage

4. Motor units :

Are found only in cardiac muscle

Are largest in muscles responsible for delicate movements

Consist of a muscle fiber and all the nerves that supply it

Consist of a motor neuron and all the muscle fibers it supplies

Are the same as neuromuscular junctions

5. This back muscle extends from the cranium to the sacrum, , while this muscle is the largest of the superficial back muscles, .

Quadratus lumborum, latissiumus dorsi

Erector spinae, latissimus dorsi

Multifidus, trapezius

Quadratus lumborum, trapezius

Erector spinae, serratus posterior

6. A condition where a piece of viscera protrudes through the diaphragm is call a/an while a piece of viscera protruding through the navel is called a/an

Umbilical hernia, inguinal hernia

Hiatal hernia, umbilical hernia

Inguinal hernia, hiatal hernia

Umbilical hernia, rectal hernia

Hiatal hernia, inguinal hernia

7. Thick filaments are composed of while thin filaments are primarily composed of , and these proteins are referred to as __ proteins

Actin, myosin, regulatory

Troponin, tropomyosin, regulatory

Actin, myosin, contractile

Myosin, actin, contractile

Myosin, troponin, accessory

8. The hardening of the muscles and stiffening of the body after death is referred to as and is the result of

Rigor mortis; halted ATP production

Excitation-contraction coupling; excessive calcium release

Rigor mortis; decreased calcium release from the SR

Rigor mortis; excessive ATP production

Relaxation; decreased calcium release from the SR

9. Which of the following structures surround the fascicles of a muscle?

Endomysium

Perimysium

Epimysium

Fascia

Sarcolemma

10. All of the following are components of thin filaments EXCEPT

F actin

Myosin

Tropomyosin

Troponin

G actin

11. An example of a multipennate muscle would be the

Deltoid

Orbicularis oculi

Temporalis

Biceps brachii

Pectoralis major

12. With regard to the muscle fiber arrangement in a fusiform muscle:

Has uniform width

Is fanshaped

Fascicles insert obliquely on the tendon

Are thick in the middle and tapered at the ends

Form a ring around a body opening

13. An elaborate network of membranes is skeletal muscle cells that functions as a calcium reservoir

Sarcoplasmic reticulum

Myofibrils

T tubules

Sarcolemma

Sarcomeres

14. A muscle that provides the major force during a joint action is called while a muscle that aids with this process is called

An antagonist, a synergist

An antagonist, a fixator

A prime mover, a fixator

A synergist, an antagonist

A prime mover, a synergist

15. Calcium ions bind to the ______ protein in skeletal muscle cells

Myosin

Tropomyosin

Troponin

Actin

Titin

16. When acetylcholine is released, it diffuses across the and during relaxation is broken down by

Synaptic vesicles, acetylcholinesterase

Synaptic cleft, tronponin kinase

Terminal cisternae, creatine kinase

Synaptic cleft, acetylcholinesterase

T tubules, creatine kinase

17. All of the following are involved in the process of respiration EXCEPT

Diaphragm

Internal intercostals

Multifidus

Serratus anterior

Scalenes

18. The is the most powerful muscle in the body and serves as the of knee __

Quadriceps femoris, prime mover, extension

Sartorius, antagonist, flexion

Biceps femoris, prime mover, flexion

Quadriceps femoris, antagonist, extension

Sartorius, syngergist, extension

19. All of the following can affect muscle twitch strength EXCEPT

Stimulus frequency

Calcium concentration

Temperature

State of muscle hydration

None of the above

20. All of the following are responsible for establishing resting membrane potential (RMP) EXCEPT

Sodium (Na+)

Intracellular anions

Semi-permeable membrane

Potassium (K+)

Magnesium (Mg2+)

21. The principal elbow extensor is the found in the compartment of the __ region

Brachialis, posterior compartment, brachium

Triceps brachii, posterior compartment, brachium

Biceps brachii, anterior compartment, brachium

Triceps brachii, anterior compartment, antebrachium

Brachialis, anterior compartment, antebrachium

22. The muscle acts as the prime hip extensor and is found in the region of the hip

Iliacus, anterior

Gemellus superior, posterior

Gluteus maximus, anterior

Iliacus, posterior

Gluteus maximus, posterior

23. The contractile unit of muscle fiber responsible for the striated appearance of cardiac and skeletal muscles is referred to as the ______

Sarcoplasmic reticulum

Z disc

Sarcomere

Sarcolemma

Intercalated discs

24. All of the following prevent the toes from "scuffing" when walking EXCEPT

Fibularis tertius

Extensor hallucis longus

Soleus

Tibialis anterior

Extensor digitorum longus

25. Which of the following blocks actin binding sites, preventing crossbridge formation?

Tropomyosin

Dystrophin

Myosin

Troponin

Titin

26. Detachment of the actin/myosin crossbridges is directly triggered by

Hydrolysis of ATP to ADP and Pi

Troponin-tropomyosin complex changin shape

The power stroke

Binding of ATP to the myosin heads

Depolarization of the T tubules

27. These structures found in smooth muscle myocytes and cardiac myocytes allow for the direct stimulation of their neighboring cells

Synaptic knobs

Gap junctions

Fibroses

Motor units

Desmosomes

28. An overlap of actin and myosin filaments occurs in the

I band

H band

A band

Z disc

M line

29. Which of the following is NOT a cause of muscle fatigue

Excessive ATP production

Lactic acid lowers the pH of the sarcoplasm

ATP shortage increases the speed of Na+-K+ pumps

Motor nerve fibers use up their ACh

Both A and C

30. With respect to muscle relaxation

Enzymes breakdown acetylcholine

Calcium remains in the cytosol

Calcium remains bound to troponin

Tropmyosin exposes actin active sites

None of the above are correct

31. If a muscle were stretched to the point where thick and thin filaments no longer overlapped

Myosin and actin attachment would be optimum

No muscle tension would be generated

Maximum force production would result due to the maximum travel distance

ATP consumption would increase

An optimum resting length would be established

32. All of the following are considered rotator cuff muscles EXCEPT

Supraspinatus

Teres minor

Infraspinatus

Subscapularis

Teres major

33. All of the following are characteristics of muscles EXCEPT

Excitability

Conductivity

Elasticity

Contractility

None of the above

34. All of the following muscles are involved in chewing and swallowing EXCEPT

Temporalis

Lateral pterygoid

Hypoglossus

Splenius capitis

Both A and D

35. A smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is observed, is called

A twitch

Threshold

Incomplete tetanus

Complete tetanus

Treppe

36. The are a group of muscles that hold the scapula firmly in place and are referred to as

Rhomboids, fixators

Deltoids, antagonists

Rhomboids, synergists

Deltoids, fixators

Sternocleidomastoids, antagonists

37. Which of the following is NOT considered a posterior pectoral girdle muscle?

Pectoralis minor

Trapezius

Levator scapulae

Rhomboideus major

Both A and D

38. If you were to analyze the proteins recovered from an I band, which of the following would NOT be found?

Troponin

Actin

Myosin

Tropomyosin

Both A and C

39. Muscles of the forearm that act on the hand are referred to as and the muscles of the midpalmar group that act on the fingers are referred to as

Extensor muscles, flexor muscles

Extrinsic muscles, intrinsic muscles

Anterior compartment muscles, interior compartment muscles

Intrinsic muscles, extrinsic muscles

Flexor muscles, extensor muscles

40. The site of calcium binding found in smooth muscle is ______

Troponin

Calbindin

Calmodulin

Calcitonin

Tropomyosin

41. Which of the following neuromuscular toxins act by blocking the release of neurotransmitters from vesicles

Curare

Tetanus toxin

Botulinum toxin

Both B and C

All of the above

42. With respect to the excitation phase of muscle contraction, is responsible for the depolarization of the membrane down to the synaptic knob, and is responsible for the exocytosis of vesicles contained acetylcholine

Potassium, calcium

Sodium, chloride

Calcium, sodium

Calcium, potassium

Sodium, calcium

43. Which of the following muscles that act on the hand and wrist is found in the deep anterior compartment?

Flexor carpi radialis

Flexor digitorum superficialis

Flexor pollicis longus

Extensor pollicis longus

Extensor digitorum

44. The flexors of the leg are called and include the muscle

Quadriceps , biceps femoris

Hamstrings, semitendinosus

Triceps, semimembranosus

Hamstrings, rectus femoris

Quadriceps, vastus medialis

45. Which structure of the sarcomere would only be seen in a RELAXED fiber

Z disc

H band

A band

Thick filaments

None of the above

46. Which group of instrinsic hand muscles forms the fleshy base of the little finger

Hypothenar group

Midpalmar group

Thenar group

Lumbricals

Both A and D

47. The muscle adducts the humerus, but the muscle abducts the humerus

Deltoid, pectoralis major

Pectoralis major, latissimus dorsi

Deltoid, latissimus dorsi

Pectoralis major, deltoid

Biceps brachii, deltoid

48. Which of the following is NOT an anterior muscle of the thigh?

Sartorius

Tibialis anterior

Quadriceps femoris

Semimembranosus

Both B and D

49. An example of an axial muscle that acts on the arm is the while a scapular originating muscle that acts on the arm is

Latissimus dorsi, rhomboideus minor

Pectoralis major, rhomboideus major

Trapezius, teres minor

Latissimus dorsi, teres minor

Levator scapulae, deltoid

50. Which of the following components in NOT involved with the contraction of smooth muscle

Z disc

Thick filaments

Calmodulin

Dense bodies

Both B and C

A&p Exam 3

1. Which of the following muscles would be involved to produce horizontal wrinkles in the forehead?

2.

What first name or nickname would you like us to use?

2. The ______ is an example of a neck "flexor" while the ______ is an example of a neck "extensor"

3. Which of the following connective tissues surrounds the individual muscle cell or fiber?

4. Motor units :

5. This back muscle extends from the cranium to the sacrum, ______, while this muscle is the largest of the superficial back muscles, ______.

6. A condition where a piece of viscera protrudes through the diaphragm is call a/an ______ while a piece of viscera protruding through the navel is called a/an ______

7. Thick filaments are composed of ______ while thin filaments are primarily composed of ______, and these proteins are referred to as ______ proteins

8. The hardening of the muscles and stiffening of the body after death is referred to as ______ and is the result of ______

9. Which of the following structures surround the fascicles of a muscle?

10. All of the following are components of thin filaments EXCEPT

11. An example of a multipennate muscle would be the

12. With regard to the muscle fiber arrangement in a fusiform muscle:

13. An elaborate network of membranes is skeletal muscle cells that functions as a calcium reservoir

14. A muscle that provides the major force during a joint action is called ______ while a muscle that aids with this process is called ______

15. Calcium ions bind to the ______ protein in skeletal muscle cells

16. When acetylcholine is released, it diffuses across the ______ and during relaxation is broken down by ______

17. All of the following are involved in the process of respiration EXCEPT

18. The ______ is the most powerful muscle in the body and serves as the ______ of knee ______

19. All of the following can affect muscle twitch strength EXCEPT

20. All of the following are responsible for establishing resting membrane potential (RMP) EXCEPT

21. The principal elbow extensor is the ______ found in the ______ compartment of the ______ region

22. The ______ muscle acts as the prime hip extensor and is found in the ______ region of the hip

23. The contractile unit of muscle fiber responsible for the striated appearance of cardiac and skeletal muscles is referred to as the ______

24. All of the following prevent the toes from "scuffing" when walking EXCEPT

25. Which of the following blocks actin binding sites, preventing crossbridge formation?

26. Detachment of the actin/myosin crossbridges is directly triggered by

27. These structures found in smooth muscle myocytes and cardiac myocytes allow for the direct stimulation of their neighboring cells

28. An overlap of actin and myosin filaments occurs in the

29. Which of the following is NOT a cause of muscle fatigue

30. With respect to muscle relaxation

31. If a muscle were stretched to the point where thick and thin filaments no longer overlapped

32. All of the following are considered rotator cuff muscles EXCEPT

33. All of the following are characteristics of muscles EXCEPT

34. All of the following muscles are involved in chewing and swallowing EXCEPT

35. A smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is observed, is called

36. The ______ are a group of muscles that hold the scapula firmly in place and are referred to as ______

37. Which of the following is NOT considered a posterior pectoral girdle muscle?

38. If you were to analyze the proteins recovered from an I band, which of the following would NOT be found?

39. Muscles of the forearm that act on the hand are referred to as ______ and the muscles of the midpalmar group that act on the fingers are referred to as ______

40. The site of calcium binding found in smooth muscle is ______

41. Which of the following neuromuscular toxins act by blocking the release of neurotransmitters from vesicles

42. With respect to the excitation phase of muscle contraction, ______ is responsible for the depolarization of the membrane down to the synaptic knob, and ______ is responsible for the exocytosis of vesicles contained acetylcholine

43. Which of the following muscles that act on the hand and wrist is found in the deep anterior compartment?

44. The flexors of the leg are called ______ and include the ______ muscle

45. Which structure of the sarcomere would only be seen in a RELAXED fiber

46. Which group of instrinsic hand muscles forms the fleshy base of the little finger

47. The ______ muscle adducts the humerus, but the ______ muscle abducts the humerus

48. Which of the following is NOT an anterior muscle of the thigh?

49. An example of an axial muscle that acts on the arm is the ______ while a scapular originating muscle that acts on the arm is ______

50. Which of the following components in NOT involved with the contraction of smooth muscle

2. The is an example of a neck "flexor" while the is an example of a neck "extensor"

5. This back muscle extends from the cranium to the sacrum, , while this muscle is the largest of the superficial back muscles, .

6. A condition where a piece of viscera protrudes through the diaphragm is call a/an while a piece of viscera protruding through the navel is called a/an

7. Thick filaments are composed of while thin filaments are primarily composed of , and these proteins are referred to as __ proteins

8. The hardening of the muscles and stiffening of the body after death is referred to as and is the result of

14. A muscle that provides the major force during a joint action is called while a muscle that aids with this process is called

16. When acetylcholine is released, it diffuses across the and during relaxation is broken down by

18. The is the most powerful muscle in the body and serves as the of knee __

21. The principal elbow extensor is the found in the compartment of the __ region

22. The muscle acts as the prime hip extensor and is found in the region of the hip

36. The are a group of muscles that hold the scapula firmly in place and are referred to as

39. Muscles of the forearm that act on the hand are referred to as and the muscles of the midpalmar group that act on the fingers are referred to as

42. With respect to the excitation phase of muscle contraction, is responsible for the depolarization of the membrane down to the synaptic knob, and is responsible for the exocytosis of vesicles contained acetylcholine

44. The flexors of the leg are called and include the muscle

47. The muscle adducts the humerus, but the muscle abducts the humerus

49. An example of an axial muscle that acts on the arm is the while a scapular originating muscle that acts on the arm is