Week 1- CNS

Question 1

What sections makes up the brain

Answer 1

Forebrain
Midbrain
Hindbrain

Question 2

What makes up the forebrain

Answer 2

Telencephalon (cerebral cortex)
Diencephalon

Question 3

What makes up the hind brain

Answer 3

Cerebellum, pons, medulla oblongata

Question 4

In the sympathetic, what happens when you are competitively challenged in each structure ?

Answer 4

-pupils dialate
-relaxed airways
-increase HR
-stimulate sweat production
-stimulate glucose production and release
-reduce digestion
-reduces bile production
-inhibits secretion from S intestine
-stimulate secretion from adrenal glands (adrenalin)
-stimulate orgasm
-stimulate ejaculation

Question 5

In parasympathetic, when you are relaxed, what happens to each structure?

Answer 5

-pupils constrict
-airways constrict
-decrease HR
-reduce glucose production and release
-stimulate digestion
-stimulate bile release
-stimulate secretion from S intestine
-reduce sweating
-inhibit release from adrenal glands (adrenalin)
-stimulate errection
-inhibit orgasm
-inhibit ejaculation

Question 6

Explain rostral

Answer 6

The length of the brain, anteriorly
(Frontal lobe)

Question 7

Explain caudal

Answer 7

Towards the posterior end of the longitudinal length of the brain

Question 8

Explain dorsal

Answer 8

Superior to the longitudinal line of the brain,
+ the back of spinal cord

Question 9

Explain ventral

Answer 9

Inferior to longitudinal line of the brain (horizontal)

Question 10

Explain formation of neural tube

Answer 10

Sheet of endothelial cells
At early embryo, this sheet folds over to form the NEURAL TUBE
swelling and outpouchings develop
Neural tube down the back of embryo becomes the spinal cord
Cavities within the neural tube develop and become ventricles filled with CSF (cerebral spinal fluid)

Question 11

What causes the neural tube to bend or flex

Answer 11

Flex urges form in the embryonic neural tube that develops into th r Brain
The space into which the cranial part of neural tube is developing is limited which causes the neural tube to bend or flex

Question 12

Name 2 abnormalities caused in the embryonic stage of development of spinal tube and brain

Answer 12

Spina bifida
Anencephaly

Question 13

Define ganglia

Answer 13

Locations of neuron cell bodies in the periphery

Question 14

Define nuclei

Answer 14

Locations of neuron cell bodies within the CNS

Question 15

define tracts

Answer 15

Locations of axons within thr CNS

Question 16

define nerves

Answer 16

Locations of axons in the periphery