Lecture 6 Flashcards
_________ monitors cutaneous and proprioceptors in skin, muscle, and tendons
somatic sensory
monitors sensory activities of visceral organs
visceral sensory
the peripheral nervous system is divided into
the somatic nervous system and atomic nerves system
The effectors cell innervated by the somatic nervous system are _______________
skeletal muscle cells
The autonomic nervous system innervates 3 different type of effector cells:
- smooth muscle
- cardiac muscle
- exocrine glands
In the somatic nervous system, one neuron will innervate a single skeletal muscle fiber. The neuron transmitter released is _______________ and it will bind to receptors on the skeletal muscles causing muscle contraction
acetylcholine
There are two neurons in the ___________________> The first has a long axon and cell body that originates in cranial nerve nuclei or in the sacral spinal cord and the shorter one also releases ach
parasympathetic nervous system
)________________=FIGHT OR FLIGHT
parasympathetic nervous system
the cell body is usually located on or close to the ____________________
target organ
The parasympathetic nervous system causes _________
GI mobility and release of glandular secretions
There are sympathetic motor efferent. The preganglionic neuron uses ACH as a neurotransmitter just as a _____________
parasympathetic neurons is located either in a prevertebral ganglion port in the sympathetic chain ganglion and its axon travels to its target.
Activation will cause fight or flight syndrome, your heart will start
beating faster and gastric motley will be inhibited
preganglion neurons between
T1 and L2
_________________ located in intermediate horn of spinal cord T1-L2 levels
preganglionic neurons
__________ contains larger myelinated axons
white remus
_________ located in 2 different ganglia
post gangliari neurons
________________ paravertebral ganglion at the same or different spinal level as the post ganglionic neurons
sympathetic chain ganglion
-_______________________ contains smaller unmyelinated axons
gray ramus
___________________ provide sympathetic innervation to head and neck (superior, middle, and inferior cervical ganglion
cervical ganglia
_____________ an example is the celiac ganglion in abdomen
prevertebral ganglion
________ axon of preganglion neurons traveling to celiac ganglion. Supplies sympathetic innervation to visceral organs such as liver, stomach, kidney and small intestine. Also innervates the adrenal medulla, causing secretion of epinephrine and norepinephrine
greater splanchnic nerve
____________ originates in the brainstem and innervates the organs in the head, neck, thoracic cavity, and most of the abdominal cavity
cranial overflow
______________ neurons are associated with 4 cranial nerves
cranial preganglionic
parasympathetic preganglionic neurons are associated with
CN 3, 7, 9, 10
_____________ innovating the head and neck are located in 1 of 4 cranial parasympathetic ganglia
cranial postganglionic
______________ target, smooth muscle of eye
ciliary ganglion
_________________ target,, salivary gland and mucosa
two ganglia related to CN 7
______________ target, salivary gland
otic ganglion related to CN 9
_____________ neurons associated with CN 10 are located on or near the visceral target
cranial post ganglionic neuron
______________ supplies the digestive tract and pelvic organs. For 100 years the sacral pre ganglionic neurons were considered part of the parasympathetic system, but new evidence suggest that the sacral preganglionic neurons are in fact sympathetic neurons
sacral preganglion neurone
_____________neruosn located in intermediate gray matter the spinal cord: S2-S4 levels,
sacral postganglionic neurons
cranial nerves numbered from I to XII starting from rostral moving to caudal
first 2 pair’s attach to forebrain rest exit the brainstem
CN X the wandered is the ranial nerve the innervate targets in the ethothorac cavities
cranial nerves
cranial nerves containing primarily somatic motor fibers
3, 4, 6, 11, 12
cranial nerves containing both sensory and motor components
5, 7, 9, 10
cranial nerves containing special sensory fibers
olfactory, vision, hearing and equilibrium
cranial nerves containing primary somatic motor fibers
3, 4, 6, 11, 12
_________ oculomotor nerve
CN3
_____________ trochlear nerve
CN4
______________ abducens nerve
CN 6
_____________ has cell bodes in the cervical spinal cord, single branch, centrally located, neck
CN 11
Function of CN11
somatic motor nerve innovation
One CN Supplies somatic motor fibers to the tongue and floor of mouth.
CN 12
_____________ hypoglossala nerve, cell bodies in medulla
hypoglassal nerve CN 12
________________ exists in the area between the pyramid and inferior olive
hypoglassal nerve