Anatomy And Physiology Exam #3

99 Questions  I  By A&pstudy
Nerves, endocrine, hormones

  
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1.  The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are
A.
B.
C.
D.
2.  Masses of myelinated nerve fibers appear
A.
B.
C.
D.
3.  Which of the following is a type of neuroglial cell?
A.
B.
C.
D.
4.  Which of the following lists the parts of a reflex arc in the correct sequence
A.
B.
C.
D.
5.  Whena nerve fiber is polarized, the concentration of
A.
B.
C.
D.
6.  Saltatroy propagation
A.
B.
C.
D.
7.  What produces myelin in the brain and spinal cord
A.
B.
C.
D.
8.  The nervous system
A.
B.
C.
D.
9.  Which of the following ions passes through cell membranes of resting neurons most readily
A.
B.
C.
D.
10.  If a resting potential becomes more negative, the membrane is said to be
A.
B.
C.
D.
11.  What is the correct sequence of events that follow a threshold potential?(1)the membrane becomes depolarized(2)Sodium channels open and sodium ions diffuse inward(3)the membrane becomes repolarized(4)potassium channels open and potassium ions diffuse outward
A.
B.
C.
D.
12.  When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of
A.
B.
C.
D.
13.  Most neurons in the brain and spinal cord are
A.
B.
C.
D.
14.  If a neuron receives a series of stimuli whose effect is excitatory but subthreshold, the neuron is more excitable to incoming stimulation than before and is said to be
A.
B.
C.
D.
15.  The expected response to the triceps jerk reflex is
A.
B.
C.
D.
16.  A nerve cell membrane may become depolarized as a result of
A.
B.
C.
D.
17.  Neurons are ____________, whereas neuroglial cells are __________.
A.
B.
C.
D.
18.  The process of transmitting a nerve impulse from one neuron to another involves a
A.
B.
C.
D.
19.  Which if the following cells is only found in the PNS? (peripheral)
A.
B.
C.
D.
20.  Myelin is rich in what type of molecule
A.
B.
C.
D.
21.  Skeltal muscle contration is under the control of the
A.
B.
C.
D.
22.  Which of the following in under voluntary control of the nervous system
A.
B.
C.
D.
23.  Clusters of neuron cell bodies are called
A.
B.
C.
D.
24.  Which of the following cells is not part of the CNS?(central)
A.
B.
C.
D.
25.  When astimulus is sufficently great enough to chenge the membrane potential and propagate an axon potential, it is
A.
B.
C.
D.
26.  Axon branches are called collaterals
A.
B.
27.  Since the response of a nerve fiber is all or none, a greater intensity of stimulation does not produce a stronger impulse
A.
B.
28.  Neve impulses are usually transmitted from a dendrite to an axon or nerve cell body
A.
B.
29.  Nodes of Ranvier occur between adjacent neurons
A.
B.
30.  Convergence involves 2 or more incoming fibers converging on a single neuron, whereas divergence involves impulses leaving a neuron and passing into several output fibers
A.
B.
31.  A mixed nerve is a nerve composed of different neuroglial cells
A.
B.
32.  The difference in electrical charge between the inside and outside of a resting nerve cell membrane is called the ______ _______.
33.  The additive phenomena by which a series of similar stimuli cause an increasing amount of change in the local membrane potential is called _______.
34.  The part of the brain that functions to coordinate voluntary muscular movement is the
A.
B.
C.
D.
35.  Which of the following is most closely associated with the decaphalon?
A.
B.
C.
D.
36.  Which of the following are generally adrenergic fibers
A.
B.
C.
D.
37.  If the area of the cerebral hemisphere corresponding to Broca's area is damaged, what is teh result?
A.
B.
C.
D.
38.  The primary motor area of the brain are located in the
A.
B.
C.
D.
39.  What is the function of cerebral association areas?
A.
B.
C.
D.
40.  The structure that contains nerve tracts connecting the right and left cerebral hemispheres is called the
A.
B.
C.
D.
41.  The cerebrum is separated from the cerebellum by the
A.
B.
C.
D.
42.  Which of the following is not a function of the hypothalamus
A.
B.
C.
D.
43.  In the case of a subdural hematoma resulting from a blow to the head, blood accumulates between the
A.
B.
C.
D.
44.  The structure of the spinal cord can be described as (pick only the ones that apply)(1)composed of 31 segments(2)having a cervical and lumbar enlargement, and 2 deep longitudinal grooves(3)a central core of gray matter that is surrounded by white matter(4)arachnoid mater and brain
A.
B.
C.
D.
45.  The consequnce of cutting the first cranial nerve would be that
A.
B.
C.
D.
46.  Which of the following cranial nerves carries autonomic motor impulses that influence heart rate
A.
B.
C.
D.
47.  A strictly sensory nerve which is also cranial nerve VIII is the
A.
B.
C.
D.
48.  The area of skin supplied by sensory nerve fibers from particular dorsal root is called a
A.
B.
C.
D.
49.  Which of the following terms with accompanying definitions is correct
A.
B.
C.
D.
50.  The consequence of sensory nerve fibers crossing over is that the
A.
B.
C.
D.
51.  The somatic nervous system consists of nerve fibers that connect the CNS to the ________, whereas the autonomic nervous system consists of fibers that connect the ________.
A.
B.
C.
D.
52.  Cerebrospinal fluid is produced by ________ and it functions to _________.
A.
B.
C.
D.
53.  The subarachnoid space within the meninges contains cerebrospinal fluid
A.
B.
54.  The epineurium is composed of nervous tissue
A.
B.
55.  If the fibers in the ascending tract of the cord are cut, the affected person will have a loss of motor functions below the injusry
A.
B.
56.  Nerve fibers of the ___________ division of the autonomic nervous system arise from the brain stem and the sacral region of the spinal cord.
57.  The interconnected, fluid filled cavities within the brain are called _________.
58.  The part of the brain stem that includes the cardia and vasomotor centers is the ____ ____.
59.  Pain receptors
A.
B.
C.
D.
60.  The olfactory receptors are examples of
A.
B.
C.
D.
61.  Which of the following is not a primary taste sensation?
A.
B.
C.
D.
62.  The hearing receptors are most closely associated with the
A.
B.
C.
D.
63.  Which of the following is part of the inner tunic of the eye
A.
B.
C.
D.
64.  The lens of the eye thickens when the
A.
B.
C.
D.
65.  Temperature senses employ 2 types of
A.
B.
C.
D.
66.  A sensation is ___________, and projection of a sensation is the _________.
A.
B.
C.
D.
67.  Which is paired correctly?
A.
B.
C.
D.
68.  Pain receptors differ from other somatic receptors by
A.
B.
C.
D.
69.  Where are the specialized sense found
A.
B.
C.
D.
70.  The auditory ossicles are located within the inner ear
A.
B.
71.  Receptors that are stimulted by changes in chemical concentrations are called thermoreceptors
A.
B.
72.  When the radial muscles of the iris contract the diameter of the pupil decreases.
A.
B.
73.  The iris functions to provide color to the eye
A.
B.
74.  The optic disk is located medial to fovea centralis and is the site from which nerve fibers from the the retina leave the eye and become part of the optic nerve
A.
B.
75.  Nerve impulses from the organ of corti travel on the vestibulocochlear nerve
A.
B.
76.  The auditory ossicles are the ________, _________ & _________.
77.  Pain that feels like it is coming from a part other than the part actually stimulated is called ______ _______.
78.  The ______ ________ connects the middle ear and the pharynx.
79.  The transparent, anterior portion of the eye's outer tunic is called the _______.
80.  The adjustment of the thickness of the lens to make close vision possible is called _______.
81.  The _________ ___________ is the region of the sharpest vision within the retina.
82.  Steroid hormones
A.
B.
C.
D.
83.  Nonsteroid hormones act upon their target cells by causing
A.
B.
C.
D.
84.  Growth hormone
A.
B.
C.
D.
85.  The secretion of parathyroid hormone is controlled primarily by the
A.
B.
C.
D.
86.  Insulin causes
A.
B.
C.
D.
87.  Target cells for releasing hormones are in the
A.
B.
C.
D.
88.  Which of the following hormones requires a releasing hormone from the hypothalamus for its secretion
A.
B.
C.
D.
89.  The hormone that causes calcium to be deposited in bone is
A.
B.
C.
D.
90.  Various anti-inflammatory drugs, like aspirin, that are used to treat symptoms of rheumatoid arthritis act by inhibiting the production of
A.
B.
C.
D.
91.  Where are the hormones secreted by the posterior pituitary made?
A.
B.
C.
D.
92.  Triiodothronine is a hormone secreted by the
A.
B.
C.
D.
93.  ADH and oxycytocin are secreted by
A.
B.
C.
D.
94.  Releasing hormones are substances whose target cells are in the anterior pituitary gland
A.
B.
95.  Parathyroid hormone stimulates the activity of bone resorbing osteoblasts.
A.
B.
96.  Cells of the adrenal medulla are closely associated with preganglionic fibers of the parasympathetic division of the autonomic nervous system
A.
B.
97.  A group of lipids called ________ have powerful, regulating effects on a variety of cells.
98.  Releasing hormones are transmitted from the hypothalamus to the anterior pituitary gland by vessles called _____ _____ ______.
99.  The central portion of the adrenal gland is the adrenal
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