Nervous System Chapter 15
Which regions of the CNS does the parasympathetic division of the ANS arise from? Check all that apply. A. Brainstem B. Cervical spinal cord C. Thoracic spinal cord D. Sacral spinal cord E. All the above F. B, C, and D
F. B, C, and D
Which of the following structure(s) is/are associated with the sympathetic nervous system? Check all that apply. A. The adrenal cortex B. The adrenal medulla C. The thoracolumbar spinal cord D. The pineal gland E. The vagus nerve F. All the above G. A, B, and E
G. A, B, and E
Action potentials travel down the preganglionic nerve fibers of the __________, towards the effector organs.
Vagus Nerve
Arriving at target cells, _____________ nerve fibers release acetylcholine or norepinephrine into the synaptic cleft.
postganglionic
These impulses arrive at the cardiac plexus where secretion of acetylcholine creates an action potential in the ___________ neuron.
postganglionic
Action potentials arriving at the sinoatrial and atrioventricular nodes of the heart cause ____________ to be released.
acetylcholine
The effect of norepinephrine binding to _____________receptors stimulates cardiac muscle cells.
adrenergic
Complete each sentence by dragging a word to the proper position. Then arrange the sentences into the order of occurrence of motor impulses in the ANS. 1. Also known as the craniosacral division, the parasympathetic nervous system has fibers exiting the CNS at the medulla oblongata. 2. Action potentials travel down the preganglionic nerve fibers of the vagus nerve, towards the effector organs. 3. These impulses arrive at the cardiac plexus where secretion of acetylcholine creates an action potential in the postganglionic neuron. 4. The impulse arrives relatively quickly at the heart, as parasympathetic postganglionic fibers are short compared to sympathetic postganglionic fibers. 5. Action potentials arriving at the sinoatrial and atrioventricular nodes of the heart cause acetylcholine to be released. 6. This parasympathetic neurotransmitter causes a decrease in heart rate and contractility.
1, 2, 3, 4, 5, 6
Arrange the sentences into the order of occurrence of motor impulses of the ANS. 1. Fibers exiting the sympathetic chain ganglia, take one of three routes: the spinal nerve route, the sympathetic nerve route, and the splanchnic nerve route. 2. The effect of norepinephrine binding to adrenergic receptors stimulates cardiac muscle cells. 3. Also known as the thoracolumbar division, the sympathetic nervous system exits the CNS via the spinal nerves from T1-L2. 4. Arriving at target cells, postganglionic nerve fibers release acetylcholine or norepinephrine into the synaptic cleft. 5. Action potentials travel along the preganglionic nerve fiber and enter the sympathetic chain ganglion.
3, 5, 1, 4, 2
Identify which motor division of the peripheral nervous system is described. -Requires two neurons from the CNS to the effector organ -Utilizes acetylcholine and norepinephrine as neurotransmitters -Presence of pre- and post- ganglionic neurons -CNS somas are located in the lateral horns of the spinal cord
Autonomic
Identify which motor division of the peripheral nervous system is identified by the given function. -Involuntary -Lacrimal gland activation -Intestinal smooth muscle activation -Principally involved with movement of materials through the body -Sweat gland -Piloerector muscle activation -Can be excitatory or inhibitory on the target organ
Autonomic
Which nervous system controls glands, smooth muscle, and cardiac muscle?
Autonomic
Which region of the CNS is controlling each scenario? -It's the integrating centers for reflexes controlling heart rate and blood pressure. -It's the integrating center for the pupillary reflex
Brainstem
Which region of the CNS is controlling each scenario? -Emotions can invoke autonomic responses -Sexual thoughts or images can increase blood flow to the genitals
Cerebral Cortex
Which of the following is/are functions of the enteric nervous system? Check all that apply. A. It regulates the movement of contents through the esophagus. B. It regulates the secretion of digestive enzymes. C. It innervates smooth muscles of the intestines. D. It innervates the sweat glands of the abdominal wall. E. It decreases urine production. F. All the above G. A, B, and C
G. A, B, and C
Which region of the CNS is controlling each scenario? -It activates the fight-or-flight response -It's the major control center of the ANS -It's the integrating center for thermoregulation
Hypothalamus
Drag each into the appropriate category based on whether it describes the parasympathetic or sympathetic division. -Associated with reduced energy expenditure -Decrease the frequency of impulses initiated by the sinoatrial node of the heart -Stimulates the smooth muscles of the digestive tract
Parasympathetic
Identify which division of the autonomic nervous system is dominant during the activity. -Digesting -Defacation -Diuresis
Parasympathetic
identify which motor division of the autonomic nervous system is described. -Activation of digestive organs -Storage of energy -Decreased pulmonary airflow -Urinary bladder wall contraction -Rest and digest
Parasympathetic
Identify which motor division of the peripheral nervous system is described. -Only requires one neuron from the CNS to the effector organ -Associated with voluntary motor neurons -Associated with sensory receptors for touch
Somatic
Identify which motor division of the peripheral nervous system is identified by the given function. -Voluntary -Skeletal muscle activation -Principally involved with movement "of" the body
Somatic
Which region of the CNS is controlling each scenario? -It's the integrating center for urination, defecation, erection, and ejaculation reflexes.
Spinal Cord
Drag each into the appropriate category based on whether it describes the parasympathetic or sympathetic division. -Releases norepinephrine to the heart -Active during physical stress -Increases the amount of air entering the alveoli of the lungs -Maintains blood pressure -Results in decreased urine production
Sympathetic
Identify which division of the autonomic nervous system is dominant during the activity. -Runninng -Stress -Excitement -Fight-or-flight
Sympathetic
Identify which motor division of the autonomic nervous system is described. -Increased heart rate -Increased blood flow to skeletal muscle -Reduced urinary output -Increased pulmonary airflow -Fight-or-flight
Sympathetic
Also known as the ___________ division, the parasympathetic nervous system has fibers exiting the CNS at the medulla oblongata.
craniosacral
This parasympathetic neurotransmitter causes a _________ in heart rate and contractility.
decrease
The digestive tract has a nervous system of its own called the _________ nervous system.
enteric
The impulse arrives relatively quickly at the heart, as parasympathetic postganglionic fibers are ________ compared to sympathetic postganglionic fibers.
short
Fibers exiting the sympathetic chain ganglia, take one of three routes: the spinal nerve route, the sympathetic nerve route, and the _____________ nerve route.
splanchnic
Action potentials travel along the preganglionic nerve fiber and enter the __________________.
sympathetic chain ganglion
In the __________ division of the ANS the preganglionic nerve fibers are short, while in the __________ division the preganglionic fibers are relatively long.
sympathetic; parasympathetic
Also known as the ____________ division, the sympathetic nervous system exits the CNS via the spinal nerves from T1-L2.
thoracolumbar
