Autonomic Nervous System (Lecture)

which regions of the central nervous system play a role in regulating the autonomic nervous system?
The cerebrum, hypothalamus, brainstem, and spinal cord.

Which organs receive postganglionic axons from the superior mesenteric ganglion?
The distal half of the duodenum, part of the pancreas, the remainder of the small intestine (jejunem), the proximal part of the large intestine, the kidneys, and the proximal parts of the ureters.

Which cranial nerve provides parasympathetic innervation to control the production and secretion of tears, nasal secretions, and saliva?
Facial nevre (CN7)

The sympathetic divisionof the autonomic nervous system is anatomically known as the [_____] division
Thoracolumbar

The [_____] nerve causes increased smooth muscle motility and secretory activity in the organs of the digestive tract.
Vagus

Which organs receive postganglionic axons from the inferior mesenteric ganglion?
The distal colon, rectum, urinary bladder, distal parts of the ureters, and most of the reproductive organs.

All preganglioinc axons in the autonomic system release the neurotransmitter [________].
ACh

Which cranial nerve supplies parasympathetic innervation to the thoracic organs, most abdominal organs and the gonads?
Vagus (CN X)

The parasympathetic division of the autonomic nervous system helps maintain [________], a constant internal enviroment.
Homeostasis.

Which of the following responses in visceral effectors with dual innervation occur as a result of sympathetic innervation?
Speeds up heart rate, Decreases gastrointestinal tract motility, Causes pupil dilation.

parasympathetic innervation of the bladder causes:
Contraction of the smooth muscle in the bladder wall.

In response to a specific stimulus, autonomic reflex arcs can trigger the following responses:
Smooth muscle contraction, secretion by glands, and cardiac muscle contraction

An organ receiving innervation from postganglionic axons from both divisions of the autonomic system has [_______] innervation.
Dual

which segments of the spinal cord house the sympathetic preganglionic neuron cell bodies?
T1-L2

The [_________] [__________] connect the spinal nerves to each sympathetic trunk.
Rami Communicantes

Which responses in visceral effectors with dual innervation occur as a result of parasympathetic innervation?
Slowed heart rate, increased blood flow to the GI tract, and pupil constriction

Which organs are innervated by the postganglionic axons from the cellac ganglion?
the stomach, spleen, liver, gallbladder, and proximal part of the duodenum, and part of the pancreas.

which division of the autonomic nervous system is called the fight or flight division because it is primarily concerned with preparing the body for emergencies?
Sympathetic division

voluntary activities of the body, like throwing a ball or walking outside, are under control of the:
Somatic nervous system

During an emergency or crisis situation, the sympathetic nervous system can trigger [________] [________] in which many effectors respond together.
Mass activation

What are ways that the parasympathetic and sympathetic division of the autonomic nervous system are similar?
!. both divisions contain the autonomic ganglia that house ganglionic neurons.
2. both divisions are under involuntary control.
3. both divisions utilize a preganglionic and ganglionic neuron.

in blood vessels innervated by only sympathetic axons, increased sympathetic stimulation causes the vessels to [______] while decreased sympathetic stimulation causes the vessels to [_______].
constrict/relax

which gland receives parasympathetic innervation from the glossopharyngeal nerve (CN IX)?
parotid salivary gland

parasympathetic innervation from the vagus nerve causes the heart to:
decrease heart rate

These statements describe the sympathetic division of the autonomic nervous system?
1. fight or flight division
2. preganglionic neuron cell bodies in T1-L2 of spinal cord
3. autonomic ganglia close to vertebral column
4. short preganglionic axons and long postganglionic axons

the hypogastric plexus, which innervates the pelvic viscera, consists of parasympathetic axons from the [_______] [________] nerve
pelvic splanchnic

these statements describe the autonomic motor nervous system?
1. the effector organs are the cardiac muscle fibers, smppth muscle fibers, and glands
2. it is under involuntary control
3. it uses 2 neurons in a signaling pathway

autonomic nervous system involuntary activities of the body, such as changes in blood vessel diameter to adjust blood pressure, are under the control of the: erection parasympathetic innervation causes ______ of the female clitoris and male penis WE WILL WRITE …

the synaptic knobs of postganglionic adrenergic neurons contain norepinephrine what are the four sympathetic pathways -spinal nerve pathway -postganglionic sympathetic nerve pathways -spanchnic nerve pathway -adrenal medulla pathway WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR …

Sympathetic nervous system mobilize the body’s fight-or-flight response & constantly active at a basic level to maintain homeostasis. Parasympathetic nervous system responsible for stimulation of “rest-and-digest” or “feed and breed” WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC …

What does dual innervation mean? Dual innervation means that a body organ receives neural innervation from both sympathetic and parasympathetic neurons on the ANS. Which division, sympathetic or parasympathetic, has longer preganglionic axons? Why? Most parasympathetic preganglionic axons are longer …

Autonomic Nervous System v. Sensory Somatic Nervous System •peripheral nervous system divided into sensory somatic nervous system and autonomic nervous system •sensory somatic nervous system controls voluntary actions of skeletal muscle •autonomic nervous system controls involuntary actions of cardiac muscles, …

Cholinergic Drugs Affecting the Autonomic Nervous System Basic Functions of the Nervous System • Recognizes the changes in the internal environment and the external environment. • It processes and integrates environmental changes that are perceived. • It also reacts to …

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