Nervous system 1
Almost 75 percent of all parasympathetic outflow travels along the A) oculomotor nerve. B) splanchnic nerves. C) vagus nerve. D) pelvic nerves. E) collateral nerve.
C
Dual innervation refers to A) an organ receiving two nerves from the spinal cord. B) an organ receiving both autonomic and somatic motor nerves. C) an organ receiving both sympathetic and parasympathetic nerves. D) an organ receiving nerves from both the brain and the spinal cord. E) none of the above
C
A disorder affecting the comprehension and use of words is termed A) amnesia. B) aphasia. C) apraxia. D) dyslexia. E) hemiaplasia
D
Effects produced by the parasympathetic branch of the autonomic nervous system include A) dilation of the pupils. B) increased secretion by digestive glands. C) dilation of respiratory passages. D) increased heart rate. E) all of the above
B
If Broca's area is damaged, what might result? A) loss of sensation B) loss of ability to speak C) loss of upper limb control D) loss of memory E) mental retardation
B
Increased parasympathetic stimulation A) increases heart rate. B) increases the general level of activity of the digestive system. C) causes sweat glands to release sweat. D) causes blood vessels in the skin to dilate. E) causes the pupils to dilate
B
Nerves that innervate organs in the ventral body cavities are the A) cervical spinal nerves. B) thoracic spinal nerves. C) cranial nerves. D) autonomic nerves. E) somatic motor nerves.
D
Proper control of the respiratory passages depends upon A) sympathetic stimulation only. B) parasympathetic stimulation only. C) somatic motor stimulation only. D) both parasympathetic and sympathetic levels of stimulation. E) none of the above
D
Sympathetic innervation of the urinary bladder and sex organs is by way of the A) celiac ganglion. B) superior mesenteric ganglion. C) optic ganglion. D) inferior mesenteric ganglion. E) pelvic ganglion.
D
The entire spinal cord is divided into ________ segments. A) 5 B) 12 C) 25 D) 31 E) 35
D
The horns of the spinal cord contain A) nerve tracts. B) columns. C) meninges. D) nerve cell bodies. E) all of the above
D
The ventricle associated with the pons and upper medulla is the A) first. B) second. C) third. D) fourth. E) latera
D
The visual cortex is located in the A) frontal lobe. B) parietal lobe. C) temporal lobe. D) occipital lobe. E) cerebellum.
D
The part of the brain that functions to control skeletal muscles is the A) medulla oblongata. B) cerebral cortex. C) midbrain. D) diencephalons. E) thalamus.
B
The walls of the diencephalon form the A) hypothalamus. B) thalamus. C) brain stem. D) midbrain. E) cerebellum
B
A neural cortex is found on the surface of the A) cerebrum. B) midbrain. C) cerebellum. D) pons. E) both A and C
E
Major centers concerned with autonomic control of breathing, blood pressure, heart rate, and digestive activities are located in the A) medulla oblongata. B) pons. C) midbrain. D) diencephalons. E) cerebellum.
A
The division of the autonomic nervous system that maintains homeostasis during stressful conditions is the A) sympathetic division. B) parasympathetic division. C) thoracolumbar division. D) arachnoid division. E) somatic motor division
A
The posterior horns of the spinal cord contain A) sensory nuclei. B) somatic motor nuclei. C) autonomic motor nuclei. D) nerve tracts. E) all of the above
A
Each of the following effects is associated with the action of postganglionic sympathetic fibers EXCEPT one. Identify the exception. A) increased sweat secretion B) reduced circulation to the skin C) decreased heart rate D) dilation of the pupils E) increased blood flow to skeletal muscles
C
Enlargements of the spinal cord occur A) near the posterior median sulcus. B) adjacent to the anterior median fissure. C) in segments of the spinal cord that control the limbs. D) in the thoracic region of the spinal cord. E) none of the above
C
Gray matter in the spinal cord is mostly A) fissures. B) cerebrospinal fluid. C) interneurons. D) axons. E) myelin
C
Preganglionic neurons of the sympathetic nervous system are located in the A) gray matter of the cervical region of the spinal cord. B) gray matter of the cervical and thoracic region of the spinal cord. C) gray matter of segments TI to L2 of the spinal cord. D) gray matter of segments TI to L5 of the spinal cord. E) gray matter of segments TI to S2 of the spinal cord.
C
Regions of the brain that are involved in interpreting data or coordinating motor responses are A) commissural areas. B) sensory areas. C) association areas. D) motor areas. E) processing areas.
C
The area anterior to the central sulcus is the A) parietal lobe. B) temporal lobe. C) frontal lobe. D) occipital lobe. E) postcentral gyrus.
C
There is(are) ________ sympathetic collateral ganglia located in the abdominal cavity. A) one B) two C) three D) four E) six
C
When a neuron is at rest, which ion passes through its membrane most easily? A) sodium B) chloride C) sulfate D) potassium E) proteins
D
Which of the following is a function of the motor division of the nervous system? A) providing sensation of the internal and external environments B) integrating sensory information C) coordinating voluntary and involuntary activities D) sending signals to muscles
D
Which of the following link(s) the cerebral hemispheres with the brain stem? A) medulla oblongata B) pons C) midbrain D) diencephalon E) cerebellum
D
If the dorsal root of a spinal nerve is severed, A) motor control of skeletal muscles would be impaired. B) motor control of visceral organs would be impaired. C) the spinal cord would not be able to process information at that level. D) the brain would not be able to communicate with that level of the spinal cord. E) incoming sensory information would be disrupted.
E
Preganglionic fibers of parasympathetic neurons can be found in cranial nerve A) III. B) VII. C) IX. D) X. E) all of the above
E
The region of the brain that is involved in conscious thought and intellectual function as well as processing somatic sensory and motor information is the A) medulla. B) pons. C) midbrain. D) cerebellum. E) cerebrum
E
