Nerves Flashcards
What makes up the central nervous(CNS)?
brain and spinal cord
what does the peripheral nervous system consist of?
nerves
what are the nerves connecting head to brain and brain to head?
cranial nerves
what nerves connect body/limbs to brain and vise versa?
spinal nerves
what nerves connect organs to brain and vise versa?
autonomic nerves
In a single nerve cell what is the direction of impulse?
dendrite-cell body-axon
in the CNS a group of nerve bodies is called what?
nucleus
in the PNS a group of nerves bodies is called what?
ganglion
what is a synapse?
a gap/junction between 2 nerves
How many lobes does each cerebral hemisphere have?
4
What are the names of 4 lobes within each cerebral hemisphere?
frontal lobe
parietal lobe
occipital lobe
temporal lobe (looks like thumb of boxing glove)
How are the cranial nerves numbered?
from front to back
What is CNI called?
olfactory nerve
What is CNII called?
optic nerve
What is CNIII called?
Oculomotor nerve
What is CNIV called?
trochlear nerve
What is CNV called?
trigeminal nerve
What is CNVI called?
abducent nerve
What is CNVII called?
Facial nerve
What is CNVIII called?
Vestibulocochlear nerve
What is CNIX called?
Glossopharyngeal nerve
What is CNX called?
Vagus nerve
What is CNXI called?
spinal accessory nerve
what is CNXII called?
hypoglossal nerve
What hole does the spinal cord pass through?
foramen magnum
Compare the location of grey matter within brain and spinal cord.
in brain-superficial
in spinal cord-its deep
Compare the location of white matter within brain and spinal cord?
in brain-deep
in spinal cord-superficial
What are the 4 segments of the spinal cord?
cervical
thoracic
lumbar
sacral/coccygeal
how many pairs of spinal nerves are there?
31
How many pairs of cervical spinal nerves are there?
8
How many pairs of thoracic spinal nerves are there?
12
How many pairs of lumbar spinal nerves are there?
5
How many pairs of sacral spinal nerves are there?
5
How many pairs of coccygeal spinal nerves are there?
1
What connects spinal nerves to structures of body wall?
rami
What connects the spinal nerves to the spinal cord?
roots and rootlets of the spinal nerve
What is a dermatome?
a strip of the body wall which a pair of spinal nerves supplies
What is a nerve plexus?
network of intertwined anterior rami axons
what does the cervical plexus contain?
C1-C4 rami
What does the brachial plexus contain?
C5-T1 rami
What does the lumbar plexus contain?
L1-L4 rami
What does the sacral plexus contain?
L5-S4 rami
Name 5 nerves in the brachial plexus.
- axillary nerve
- median nerve
- musculocutaneous nerve
- radial nerve
- ulnar nerve
What part of the nervous system supplies the body walls?
somatic
What part of the nervous system supplies the body?
autonomc
name the 6 senses of the somatic nervous system.
coarse touch fine touch vibration proprioception temperature pain