EXAM 2- Neuro intro

Question 1

A, B, C fibers

Answer 1

A= myelinated
B= non-myelinated
C= some myelin

A fibers
alpha (widest), beta, gamma, delta (smallest)

Question 2

what’s another name for a cell body

whats in a cell body

Answer 2

aka soma

contains a nucleus and mitochrondria

Question 3

receiving end of neuron

Answer 3

dendrite

Question 4

beginning part of axon

Answer 4

axon hillock

no excitatory connections here

Question 5

how many connection can neurons have with neighbors

Answer 5

10,000

Question 6

Definition of GABA receptors on axon hillock

Answer 6

natural inhibiton

also mACh on HR

Question 7

supporting cells of the nervous system

Answer 7

glial cells
proliferate (neurons don’t)

Question 8

astrocyte

Answer 8

• support to the BBB
• cell body with appendages to connect to endothelial cells of vessels
• “star like”
• maintain pH of CSF/electrolyte balance
• “astrocytic end foot” wraps around capillaries

Question 9

Ependymal cells

Answer 9

form choroid plexus
produce CSF
have cilia to circulate CSF

Question 10

Oligodendrocytes

Answer 10

form myelin in the CNS
wraps around balls of neurons

Question 11

Microglia

Answer 11

small glial cell- only NON MACROGLIA cell

macrophage/phagocyte of neuronal debris

immune system in structures that contain CSF

Question 12

Multipolar neuron

Answer 12

decision making cell
MOTOR NERUON

Question 13

Pseudounipolar Neuron

Answer 13

SENSORY cells outside the SPINAL CORD

cell body in the middle
- builds proteins
- replaces things that need to be maintained

Question 14

Bipolar Neuron

Answer 14

specialized senses

OPTIC NERVE: photoreceptors of retina

Question 15

another name for free nerve endings

Answer 15

nocireceptors

transducer/sense painful stimuli

have reverse adaptation

Question 16

sagital plane

Answer 16

L vs R

Question 17

Coronal plane

Answer 17

anterior vs. posterior

Question 18

Oblique

Answer 18

non-standard plane

Question 19

Telencephalon

Answer 19

cerebral hemispheres

Question 20

Diencephalons

Answer 20

thalamus, hypothalamus, epithalamus, subthalmus

connects the cerebral hemispheres to the brainstem

Question 21

whats the reply center in the brain

Answer 21

thalamus

Question 22

Hypothalamus function

Answer 22

sensory
control sensors of:
- osmo receptors, infections, body temp

Question 23

another name for the midbrain

Answer 23

mesencephalon

• midbrain
• pons
• medulla oblongata

Question 24

3 things that make up the CNS

Answer 24

brain, brainstem, spinal cord

Question 25

What are several lumps on the brain called

Answer 25

Gyri (pleural)

one= gyrus