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Anatomy
Set 2
Question | Answer |
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Muscles that contract at the same time as the prime mover are called: synergists. fixators. antagonists. both A and B. | both a and b |
A muscle is attached to the femur and tibia. Its function or action is to bend the knee. When it contracts, it is acting as the: antagonist. prime mover. fixator synergist. | prime mover. |
Which of the following statements about the muscles of the head is incorrect? a.They are paired muscles. b.They have different actions depending on whether one or both parts of the pair contract. c. The splenius capitis muscle is sometimes called t | C |
The flexor muscles that move the fingers are mostly located on the: a.anterior lateral surface of the forearm. b. anterior medial surface of the forearm. c. posterior surface of the forearm. d. posterior surface of the hand. | B |
Which is true of a reflex arc? a. It does not involve the brain. b. It always consists of an afferent neuron and an efferent neuron. c. It always consists of an afferent neuron, an efferent neuron, and an interneuron. d.It always consists of an | B |
Which of the following compounds cannot cross the blood-brain barrier? a. Water b. Carbon dioxide c. Glucose d. Dopamine | D |
Neurons in the CNS have less chance of regenerating for all of the following reasons except: a.there is no neurolemma in cells of the CNS. b. astrocytes fill in the path of regrowth. c. microglia lay down scar tissue. d. All of these lessen the chan | C |
In the human nervous system: a. most of the cells are neurons. b. most of the cells are glia cells. c. there are almost equal numbers of glia cells and neurons. d. the ratio of cells is unknown because of the complexity of the nervous system | B |
The areas specializing in language functions are found in the left cerebral hemisphere in: a. about 10% of the population. b.about 50% of the population. c. about 90% of the population. d. all people. | C |
The phrenic nerve is found in the _____ plexus a. cervical b. brachial c. lumbar d. sacral | A |
The cranial nerve that arises from the spinal cord is the: a. abducens. b. accessory. c. glossopharyngeal. d. vagus. | B |
Sensory neurons can operate in autonomic reflex arcs. True or False | true |
Which of the following endocrine glands develops primarily from the endoderm of the pharynx? a. pineal b. anterior and posterior lobes of the pituitary c. adrenal medulla d. thyroid and parathyroids | D |
Which of the following statements does not correctly describe the spiral organ of Corti? a. The "hairs" of the receptor cells are embedded in the tectorial membrane. b. The tectorial membrane bends with vibrations, whereas the basilar membrane is rigid | B |
Fluid filling the posterior segment of the eye. a. serous fluid b. endolymph c. synovial fluid d. aqueous humor e. vitreous humor | E |
During fetal circulation, what opening in the septum, between the right and left atria, directs most of the blood so that it bypasses the fetal lungs? a. ductus venosus b. ductus arteriosus c. foramen ovale d. placenta | C |
Recognition of antigens by antibodies occurs when an: a. antibody attaches to the target cell’s antigen binding site. b. antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. c. antibody’s epitopes fit into and bind to an | B |
Which of the following is not a function of the respiratory system? a. Assists with homeostasis of body pH b. Distributes oxygen to cells c. Filters air d. Warms air | B |
Which of the following is true of the intrinsic muscles of the larynx? a. Their origin is the hyoid bone. b. They move the larynx as a whole. c. They serve in voice production. d. Both A and B are correct | C |