Nervous System

Question 1

Main types of nervous system

Answer 1

CNS and PNS

Question 2

PNS divisions and functions

Answer 2

Afferent: sensory info to brain
Efferent: Motor info to body

Question 3

Efferent division and functions

Answer 3

Somatic: skeletal muscle
Autonomic: cardiac/smooth muscle

Question 4

Autonomic divisions and function

Answer 4

Sympathetic: fight/flight
Parasympathetic: rest/digest

Question 5

Neurons

Answer 5

Specialised nerve cell
Sensory neuron: axons convey to CNS
Motor neuron: axons convey away CNS

Question 6

Meninges

Answer 6

Dura mater: superficial, tough
Arachnoid mater: like a spiders web, subarachnoid space has CSF between Pia mater
Pia mater: deep. Thin CT.

Question 7

Plexuses

Answer 7

Cervical- c1-c5… 2 major peripheral nerves
Brachial-c5-t1… 5 major peripheral nerves
Lumbar-L1-L4… 4 major peripheral nerves
Sacral- L4-S4… 2 major peripheral nerves

Question 8

Dervish plexus

Answer 8

C3-C5: phrenic nerve

C1-C5: cervical nerves

Question 9

Brachial plexus

Answer 9

C5-6: axillary
C5-T1: radial
C5-7: musculocutaneous
C6-T1: median
C8-T1: ulnar

Question 10

Lumbar plexus

Answer 10

T12-L1:iliohypogastric
L1:ilioinguinal
L2-4: femoral
L2-4:obturator

Question 11

Sacral plexus

Answer 11

L4-S2: Gluteal (sup/Inf)

L4-S3: Sciatic (Tibial/Peroneal)

Question 12

Sciatic nerve

Answer 12

Splits into tibial and common peroneal nerve above knee

Question 13

Common peroneal nerve

Answer 13

Splits below knee into superficial and deep peroneal nerve