Explain Human Anatomy Of Body Cavity Flashcards

The term pollex refers to the ________. Thumb Subdivisions of anatomy include which of the following? gross, regional, systemic, and surface Which body cavity protects the nervous system? dorsal What is the specific name for the hip region? coxal Which of these is not part of the dorsal cavity? thoracic cavity If you consider your home air conditioner in terms of homeostasis, then the wall thermostat would be the ________. control center The cavities housing the eyes are called __________ cavities orbital Which of the following are survival needs of the body? nutrients, water, atmospheric pressure, and oxygen The dorsal body cavity is the site of which of the following? brain What is the posterior side of the patella called? popliteal Amino acids joining together to make a peptide is a good example of a synthesis describe fibrous proteins very stable and insoluble in water in liquid xyz you notice that light is scattered as it passes through.what type of liquid is it colloid describe coenzymes organic molicules derived from vitamins what would be false about enzymes enzymes raise the activation energy needed to start a reaction discribe about mixtures a solution contains solvent in large amounts ans solute in smaller qualities what bonds often bind diffrent parts of a molecule into a specific three -dimensional hydrogen two good examples of a colloid would be Jell-O and cytosol describe HCO3 a bicarbonate ion the single most abundant protein in the body is collagen example of a coenzyme is riboflavin(B2) What is the ratio of fatty acids to glycerol 3:1 the genetic information is coded in dna by the three dimensional structure of the double helix correct statement about isotopes isotopes of the same element have the same atomic number but differ in their masses what is the major positive ion outside cells? sodium what is not a factor in influencing a reaction? time what level of protein synthesis is represented by the colling of the protein chain backbone alpha helix secondary structure heat shock proteins(hsp) are a type of protein called chaperonins the numbers listed represent the number of electrons in the first,second,and third in respectively.which is an unstable or reactive atom 2,8,1 correct statement about nucleic acids Dna is a long double strained molecule made up of a,t,g,c bases what is not true about proteins they appear to be the molecule carriers of the coded hereditary information what does not describe a atp molecule? pigments true/false a key featureof the body's metabolism is the almost exclusive use exergoni by the body false the chemical symbol o x o means the atoms are double bonded what protein type are vittally important to cell funtion in all types of stressfull situations molecular chaperones ribosomes,endoplasmic reticulum,and the golgi apparatus funtionally act in sequence synthesize and modify proteins for secretory use(export)only, never used by the cell membrane false;integral cell membrane proteins,are synthesized this way describe a cell membrane the phospholipid bilayer surrounding the cell the endomembrane system is an interactive system of organelles whose membranes are physically or funtion connected the electron microscope has revealed that one of the coponents within the cell consist microtubules arranged to form a hollow tube. this structure is a centriole what is not a funtion of the plasma membrane proteins molecular transport through the membrane cell juntion that promote the coordinated activity of cells by phsically binding them a cell community include all but peroxisomes caveolae are closely associated with all but enzymes involved in cell metabolism dna contains dark matter that codes for specific structure proteins(T/F) false crenation is likely to occur in blood cells in hypertonic solution Extracellular matrix is the most abundant extracellular material If the nucleotide or base sequence of the DNA strand used as a template for messenger RNA synthesis is ACGTT, then what would be the sequence of bases in the corresponding mRNA? UGCAA statement best describes transcytosis? transporting an endosome from one side of a cell to the other and releasing the contents by exocytosis Skin color is influenced by the presence of _______. melanin The dermis is a dense irregular connective tissue. The structures responsible for producing fingerprints are the _______. epidermal ridges The small bands of smooth muscle that attach to the hair follicle and cause goose bumps when they contract are called _______. arrector pili The portion of the hair projecting from the surface of the skin is called the _______. shaft Fingerprinting is a commonly used tool for identifying and apprehending criminals because the fingerprint is unique and _______. genetically determined most correct statement concerning skin cancer. Melanomas are rare but must be removed quickly to prevent them from metastasizing. ________ is an inherited condition that affects the heme pathway; it leaves the skin scarred and gums degenerated, and may have led to the folklore about vampires. Porphyria A needle would pierce the epidermal layers of the forearm in which order? corneum, granulosum, spinosum, basale The major regions of a hair shaft include all of the following except ________. external root sheath Acne is a disorder associated with ________. sebaceous glands The dermis ________. has two layers Which muscles attached to the hair follicles cause goose bumps? arrector pili If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cells would be damaged? lucidum Which of the following cutaneous receptors is specialized for the reception of touch or light pressure? Meissner's corpuscles is a skin sensory receptor for touch? Meissner's corpuscle Which statement correctly explains why hair appears the way it does? Kinky hair has flat, ribbonlike hair shafts. Sudoriferous glands vary in distribution over the surface of the body. Which of the following is correct? Ceruminous glands secrete cerumen, which is thought to deter insects. Although the integument is a covering, it is by no means simple, and some of its functions include ________. resident macrophage-like cells whose function is to ingest antigenic invaders and present them to the immune system The function of the root hair plexus is to ________. allow the hair to assist in touch sensation Vernix caseosa is a ________. whitish material produced by fetal sebaceous glands The ________ gland is a modified sudoriferous gland that secretes wax. ceruminous Nutrients reach the surface of the skin (epidermis) through the process of ________. diffusing through the tissue fluid from blood vessels in the dermis The reason the hypodermis acts as a shock absorber is that ________. the major part of its makeup is adipose, which serves as an effective shock absorber Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize? Squamous cell carcinoma Keratinocytes are an important epidermal cell because they ________. produce a fibrous protein that gives the skin much of its protective properties Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________. accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, well-being, and functioning of the skin. Which of the following layers is responsible for cell division and replacement? stratum basale The integumentary system is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this function? macrophages called epidermal dendritic cells Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin? Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces. The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis? fibroblasts, macrophages, and mast cells The dermis has two major layers; which of the following constitutes 80% of the dermis and is responsible for the tension lines in the skin? the reticular layer Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been stretched and/or torn? The appearance of visible, silvery-white scars is an indication of stretching of the dermis. The papillary layer of the dermis is connective tissue heavily invested with blood vessels. The superficial surface has structures called: dermal papillae. The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern known as handprints, footprints, and fingerprints. Which of the following statements is true regarding these prints or ridges? They are genetically determined, therefore unique to each person. Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage? Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen. Changes in the color of skin are often an indication of a homeostatic imbalance. Which of the following changes would suggest that a patient is suffering from Addison's disease? The skin takes on a bronze or metallic appearance. An epidermal dendritic cell is a specialized ________. phagocytic cell What are the most important factors influencing hair growth? nutrition and hormones Which of the following statements best describes what fingernails actually are? Fingernails are a modification of the epidermis. Sudoriferous (sweat) glands are categorized as two distinct types. Which of the following are the two types of sweat glands? eccrine and apocrine The composition of the secretions of the eccrine glands is ________. 99% water, sodium chloride, trace amounts of wastes, and vitamin C Apocrine glands, which begin to function at puberty under hormonal influence, seem to play little role in thermoregulation. Where would we find these glands in the human body? in the axillary and anogenital area The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. The secretion of sebum is stimulated ________. by hormones, especially androgens In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin? It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism. Burns are devastating and debilitating because of loss of fluids and electrolytes from the body. How do physicians estimate the extent of burn damage associated with such dangerous fluid loss? by using the "rule of nines" What is the first threat to life from a massive third-degree burn? catastrophic fluid loss Male pattern baldness has a genetic switch that turns on in response to ________. male hormones Eyebrow hairs are always shorter than hairs on your head because ________. eyebrow follicles are only active for a few months The dense fibrous connective tissue portion of the skin is located in the reticular region of the dermis. true The protein found in large amounts in the outermost layer of epidermal cells is collagen. false The hypodermis is composed of adipose and dense connective tissue. false Regardless of race, all human beings have about the same number of melanocytes. true Hair growth and density are influenced by hormones, nutrition, and, in some cases, lifestyle. true When a patient is said to have "third-degree burns," this indicates that the patient has burns that cover approximately one-third of the body. false Sweat glands continuously produce small amounts of sweat, even in cooler temperatures. true Short, irregular, and flat bones have large marrow cavities in order to keep the weight of the bones light. false The periosteum is secured to the underlying bone by dense connective tissue called ________. perforating (Sharpey's) fibers The most abundant skeletal cartilage type is ________. hyaline Closure of the epiphyseal plate stops all bone growth. false Each consecutive bone lamella has collagen fibers that wrap in alternating directions. true The term vertebrochondral ribs refers to ribs that attach to each other before they attach to the sternum. true Lordosis affects the thoracic vertebrae. false Which vertebra does not have a body? atlas All vertebrae possess a body, a spine, and transverse foramina. false Which of the following is an abnormal lateral curvature of the vertebral column often seen in the thoracic region? scoliosis Three discrete types of muscle fibers are identified on the basis of their size, speed, and endurance. Which of the following athletic endeavors best represents the use of red fibers? a long, relaxing swim Excitation-contraction coupling requires which of the following substances? Ca2+ and ATP What is the functional unit of a skeletal muscle called? a sarcomere What does oxygen deficit represent? the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used Creatine phosphate functions in the muscle cell by ________. storing energy that will be transferred to ADP to resynthesize ATP The extensor carpi radialis brevis ________. extends and abducts the wrist and is short Paralysis of which of the following muscles would make an individual unable to flex the knee? hamstring muscles What do the geniohyoid, hyoglossus, and stylohyoid muscles have in common? All act on the tongue. Which of the following describes fascicle arrangement in a pennate muscle? The fascicles are short and attach obliquely to a central tendon that runs the length of a muscle. The epicranius or occipitofrontalis has two bellies, the frontal and occipital. true describes the ANS? motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands Which of the following is not a special characteristic of neurons? They are mitotic. During depolarization, the inside of the neuron's membrane becomes less negative. true The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place. false The oligodendrocytes can myelinate several axons. true Bipolar neurons are commonly ________. found in the retina of the eye Unipolar neurons have axons structurally divided into peripheral and central processes. true In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes of Ranvier. true Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? acetylcholine Which of the following is not a function of the autonomic nervous system? innervation of skeletal muscle Which of the choices below describes the ANS? motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands Which of the following is not a special characteristic of neurons? They are mitotic. During depolarization, the inside of the neuron's membrane becomes less negative. true The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place. false The oligodendrocytes can myelinate several axons. true Bipolar neurons are commonly ________. found in the retina of the eye Unipolar neurons have axons structurally divided into peripheral and central processes. true In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes of Ranvier. true Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? acetylcholine Which of the following is not a function of the autonomic nervous system? innervation of skeletal muscle Which statement about epilepsy is most accurate? Epilepsy is often genetically induced but also frequently caused by head trauma, stroke, infection, and tumor. The white matter of the spinal cord contains ________. myelinated and unmyelinated nerve fibers Injury to the hypothalamus may result in all of the following except ________. loss of proprioception The arbor vitae refers to ________. cerebellar white matter An individual accidentally transected the spinal cord between T1 and L1. This would result in ________. paraplegia A fracture of the ethmoid bone could result in damage to which cranial nerve? olfactory Potentially damaging stimuli that result in pain are selectively detected by ________. nociceptors A fall or an improperly delivered gluteal injection could result in ________. sciatica Which of the following is not an example of an exteroceptor? baroreceptor A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged? facial Endothelium covers and lines internal cavities such as the pleural and peritoneal cavities. false An epithelial membrane ________. contains simple or stratified epithelia and a basement membrane The fiber type that gives connective tissue great tensile strength is ________. collagen Cartilage tissue tends to heal less rapidly than bone tissue. true Which tissue type arises from all three embryonic germ layers? epithelial tissue Organized groups of cells (plus their intercellular substances) that have a common purpose form a(n) ________. tissue Glands, such as the thyroid, that secrete their products directly into the blood rather than through ducts are classified as ________. endocrine Chondroblasts within the cartilage divide and secrete new matrix Matrix is composed of ________. fibers and ground substance Select the correct statement regarding tissue repair. Inflammation causes capillaries to dilate and become permeable. Which ligament holds the radius to the ulna at the proximal end? anular The hip joint is a good example of a(n) ________ synovial joint. multiaxial In symphysis joints the articular surfaces of the bones are covered with ________. hyaline cartilage Football players often sustain lateral blows to the extended knee. Which of the ligaments is (are) damaged as a result? medial collateral, medial meniscus, and anterior cruciate Tendon sheaths ________. act as friction-reducing structures Which of the following is not a factor that contributes to keeping the articular surfaces of diarthroses in contact? number of bones in the joint Flexion of the ankle so that the superior aspect of the foot approaches the shin is called dorsiflexion. true Which of the following is a true statement? The anular ligament surrounds the head of the radius. The gliding motion of the wrist is accomplished because of the ________ joint. plane Synovial fluid is present in joint cavities of freely movable joints. Which of the following statements is true about this fluid? It contains hyaluronic acid. Sympathetic responses generally are widespread because ________. NE and epinephrine are secreted into the blood as part of the sympathetic response Control of temperature, endocrine activity, and thirst are functions associated with the ________. hypothalamus The chain ganglion, like the dorsal root ganglion, contains soma from sensory neurons. false The route of major parasympathetic outflow from the head is via the ________. vagus nerve Over 90% of all parasympathetic fibers are derived from cranial nerve number ________. x Which statement about malnutrition-induced night blindness is most accurate? Vitamin supplements can reverse degenerative changes. What structure regulates the amount of light passing to the visual receptors of the eye? iris Information from balance receptors goes directly to the ________. brain stem reflex centers Light passes through the following structures in which order? cornea, aqueous humor, lens, vitreous humor The receptor for static equilibrium is the ________. macula