Chapter 4 Nervous and lymphatic system Flashcards
central nervous system composed of what
brain and spinal cord
neuron
one nerve cell
neuron parts
cell body, dendrites, axon
dendrites do what?
carry info to the cell body
axon do what?
carry information away from the cell body towards the terminal
nerve is a bundle of
axons
most nerves have mixed ____ and ____ function
motor sensory
spinal cord connects the ____ and _____
brain, peripheral nervous system
dura matter covers 4 things
brain, brain stem, spinal cord, spinal nerves
dura matter
thick outer most covering
arachnoid matter is what layer
middle layer
the subarachnoid space contains _____ _____
cerebrospinal fluid
Pia matter is what layer
innermost layer
Pia matter is in the _____ ______
subarachnoid space
anterior root originate form the
anterior aspect of the spinal cord
anterior root carry ______ ____ function only
outgoing motor
ganglion are located
outside the CNS
posterior roots carry _____ ______ information only
incoming sensory
posterior roots associated with this bundle of nerve cells
dorsal root ganglion
the anterior and posterior roots come together to form
spinal nerves
spinal nerves exit out of the ____
intervertebral foramina
number of spinal nerves in the cervical spine
8 pairs
number of spinal nerves in the thoracic spine
12 pairs
number of spinal nerves in the lumbar spine
5 pairs
number of spinal nerves in the sacral spine
5 pairs
number of spinal nerves in the coccygeal spine
1 pair
a ____ is an area of the skin supplied by a single spinal nerve
dermatome
____ ____ refers to a network of nerves with crossing axons from spinal root nerves
nerve plexus
Nerve plexus; This arrangement of nerves allow individual nerve fibers derived from different segments of the spinal cord to be distributed together to the _____
extremities
cranial nerves are _____ _______
peripheral nerves
sensory receptors within muscle tissue goes where
to spinal cord and brain
brain to spinal cord to periphery motor nerves cause
contraction of muscle tissue and therefore movement
arteries carry blood ____ from the heart
away
veins carry blood ____ the heart
toward
capillaries connect _____ to _______ are the site of _____ ______ in the tissues
arteries to veins, gas exchange
lymph system is an integral part of the ____ ____
immune system
lymph drains into the ______ system at the neck
venous
three functions of the lymphatic system
filters foreign particles, removing extracellular fluid from the interstitial space, absorb fat from the intestine
the central nervous system ____ and _____ sensory information
integrates, and correlates
the central nervous system generates ______ and _______
thoughts, emotions
peripheral nervous system consists of nerves carrying information from sensory receptors in the ______ to the ______ and vis versa
periphery to the CNS
3 functions of the nervous system
sensation, integration, motor
motor nerve is incoming or outgoing?
outgoing
sensory nerves are ingoing or outgoing?
incoming
arachnoid matter is loosely organized with ____ ____ appearance
web like
anterior primary rami innervates muscles and structures of the what?
upper and lower limbs, skin of lateral and ventral surfaces of the trunk
posterior primary rami innervates what?
the deep muscles and skin of the dorsal surface of the trunk
innervate definition
to supply with nerves
the recurrent meningeal nerve re-enters the IVF and innervates the structures inside the ____ ______
vertebral foreman
