Chap 3 - Nervous System
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What are the 4 catergories of the peripheral nerves?
- * Somatic sensory
- * Somatic motor
- * Visceral (automatic) sensory
- * Visceral (automatic) motor
What functions do the frontal areas of the Cerebrum control?
What are the effects when the collateral ganglia is stimulated?
- Reduction in blood flow to abdominal organs
- Decreased digestive activity
- Relaxation of smooth muscles in the wall of the urinary bladder
- Release of glucose stores from the liver
What is the anterior medial fissure?
Deep crease along the ventral surface of the spinal cord that divides the cord into right and left halves
What are the 2 nicotinic receptors called?
NicotinicN (neuron) : found in autonomic ganglia; parasymphathetic & sympathetic systems
NicotinicM (muscles): found at the neuromuscular juntion, initiate muscular contraction; somatic nervous system
What is the mesencephalon?
- aka., midbrain
- Located b/t the diencephalon and the pons
What is the mesencephalon responsible for?
motor coordination & eye movement
What is the Gray Matte of the spinal cord?
Areas in the CNS dominated by nerve cell bodies; the central portion of the spinal cord
What are the effects when the sympathatic chain ganglia in stimulated?
- Stimulation of secretion by sweat glands
- Constriction of blood vessels in the skin
- ^ in blood flow to skeletal muscles
- ^ force of cardiac contraction
- Stimulation of energy production
What is the somatic sensory nerve?
Afferent nerves that transmit sensations such as touch, pressure, pain, temperature & position
What is a neuron?
- Nerve cell
- Fundamental component of nervous system
What bones make up the cranium?
What are some of the 'key' locations to recognize for assessment for dermatomes?
- C3 : collar region
- C7 : little finger
- T4 : nipple line
- T10 : umbilicus
- S1 : small toe
What is the space outside the dura mater called?
What are the effects of the apha1 receptors?
- Peripheral vasoconstriction
- Mild bronchoconstriction
- Stimulation of metabolism
What is the temporal lobe of the cerebrum responsible for?
What are the '2' types of the sympathetic ganglia?
- Sympathetic chain ganglia
- Collateral ganglia
Sensory is located in
The parietal lobes of the cerebrum
The 12th cranial nerve which is responsible for voluntary movement of the tongue is:
The two vascular components and locations that provide blood flow to the brain are:
- Carotid (anterior)
- Vertebrobaisilar (posterior)
The sympathetic nervous system is mediated by the (blank) neurotransmitters
epinephrine and norepinephrine
The diencephalon is mostly responsible for :
- temperature regulation
- water balance
- stress response
- plays a major role in autonomic nervous system
The junction of two neurons is called a:
When acetylcholine is broken down by acetycholinesterase the resulting chemicals are:
Acetic Acid and Choline
Dopaminergic receptors cause what type of response?
dilate renal, coronary, and cerebral arteries
What part of the nervous system controls voluntary functions?
The Somatic nervous system
Material that surrounds gray matter in the spinal cord; made up largely of axons
The cranial nerve that is responsible for the tongue and facial expression is?
7- Facial nerve
What is a neuron?
A nerve cell
Groups of autonomic nerve cells located outside the CNS
Shallow longitude groove along the dorsal surface of the spinal cord
posterior medial sulcus
The third and fourth cranial nerves (Occulomoter) and (Trochlear) are responsible for what?
movement of the eye
The cranial nerve that allows a person to look up and down is:
The neurotransmitter used by the somatic nervous system is?
Motor is located:
In the frontal lobes of the cerebrum
The cranial nerve that is responsible for the ability to swallow is:
31 pairs of nerves that originate along the spinal cord from anterior and posterior nerve roots
The cerebrum governs?
- All sensory and motor actions
- It is also considered the seat of intellegence, learning, analysis, memory and language
The __________ is the outermost layer of the cerebrum
The cerebral cortex
Balance and coordination is located:
In the cerebellum
The actions of the parasympathetic nervous system are:
- Decreased HR
- Constriction of the bronchioles and pupils
The parasympathetic nervous system is mediated by the neurotransmitter ______?
The cranial nerve that is responsible for smell is?
These receptors inhibit release of norepinephrine:
Sympathetic nervous system actions may include :
- Increased HR
- Dilated bronchioles
- dilated pupils
The cranial nerve responsible for vision is?
2 - Optic
The four types of adrenergic receptors are?
- Alpha 1
- Alpha 2
- Beta 1
- Beta 2
The thalamus, hypothalamus,pituitary gland and the limbic system are located in the:
Diencephalon, aka the inner brain
Muscle and tissue of the body innervated by a spinal cord nerve root
Personality is located in the
Frontal lobes of cerebrum
The cranial nerve that is responsible for facial pain is?
5 - Trigeminal
What response does the Beta 2 receptor cause
- Increased HR
- Increased contractial force
- Increased automaticity and conductivity
Often refferd to as the "fight or flight" system prepares the body for stressful situations
Sympathetic nervous system
Areas in the CNS dominated by nerve cell bodies; central portion of the spinal cord
Bundles of axons along the spinal cord that transmit signals from the body to the brain
What are examples of neurotransmitters
The space between the dura mater and arachnoid space is called:
The subdural space
Beta 2 receptors cause what type of response?
Nerve fibers that extend from the autonomic ganglia to the target tissues
Speech control is found in what part of the brain?
The temporal lobe of the cerebrum
These adrenergic receptors cause peripheral vasocontriction, bronchoconstriction and stimulation of metabolism:
Topographical region of the body surface innervated by one nerve root:
The part of the nervous system that extends throughout the body and is comprised of cranial and peripheral nerves:
The peripheral nervous system
The 11th cranial nerve that is responsible for the neck muscles is the:
The purpose of the Mesencephalon (mid brain) is:
To control certain aspects of motor coordiantion. Play major role in eye movement
The brain and the spinal column are bathed in?
The carotid and vertebrobasilar both join at:
The circle of Willis
The 8th cranial nerve (aucostic) is responsible for?
Hearing, sense, and balance
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