Nervous Tissue

Question 1

Functions of nervous system

Answer 1

Sensory, integration, motor activity

Question 2

Structures of the nervous system

Answer 2

CNS: Brain & Spinal Cord

PNS: Cranial nerves, Spinal nerves, Ganglia, Enteric Plexuses, Sensory Receptors

Question 3

Organization of the Nervous system

Answer 3

Central Nervous System

Peripheral Nervous System

Question 4

Organization of the Nervous System:

The Brain has-
Spinal cord has -

Answer 4

Brain 100 Billion Neurons

Spinal Cord has 100 Million Neurons

Question 5

Organization of the Nervous System

Source of thoughts, emotions, and memories

Answer 5

Central Nervous system ( CNS )

Question 6

All nervous system structures outside of the CNS

Answer 6

Peripheral Nervous System (PNS)

Question 7

Divisions of Peripheral Nervous system

Answer 7

Somatic (SNS), Autonomic (ANS), Enteric Nervous system (ENS)

Question 8

Motor neurons to skeletal muscle: Voluntary

Answer 8

Somatic

Question 9

Sympathetic:

Answer 9

Fight, fright, flight

Question 10

Parasympathetic:

Answer 10

Rest and digest

Question 11

Secrete hormones (involuntary)

Answer 11

Enteric nervous system

Question 12

What is the Two cell types:

Answer 12

Neurons

Neuroglia cells

Question 13

Can respond to stimuli and convert stimuli

Answer 13

Neurons

Question 14

Critical for homeostasis

Answer 14

Neuroglia cells

Question 15

Parts of neuron

Answer 15

Cell body, dendrites, axon, node of ranvier

Question 16

Have several or many dendrites and one axon

Answer 16

Multipolar

Question 17

Have one dendrite and one axon

Answer 17

Bipolar

Question 18

Have fused dendrite and axon

Answer 18

Unipolar

Question 19

Primarily myelinated axons

Answer 19

White matter

Question 20

Cell bodies, dendrites, unmyelinated cells, axon terminals, neuroglia

Answer 20

Gray matter

Question 21

Depolarizing phase

Answer 21

-70 -> 0 -> + 30 mv

Question 22

Repolarizing cells

Answer 22

+30 mv-> 0 -> -55 -> -70 mv

Question 23

Between the center

Answer 23

Synapse

Question 24

What is NMJ?

Answer 24

Neuro muscular junction

Question 25

Fates of NT

Answer 25

Bind receptor, gets, destroyed by enzyme, they can get recycle

Question 26

What is the typical mv for resting membrane

Answer 26

-70mv

Question 27

Four types of ion channels

Answer 27

Leak channels, ligand,gated channels, mechanically gated channels, voltage-gated channels

Question 28

Insulates the neuron

Answer 28

Myelination

Question 29

Produces myelin sheath for PNS

Answer 29

Schwann Cells

Question 30

Can multiply and divide and fill in the brain

Answer 30

neuroglia

Question 31

BBB stands for?

Answer 31

Blood brain barrier

Question 32

Neuroglia of CNS ( four types )

Answer 32

Astrocytes, Oligodendrocytes, Microglia, Ependymal Cells

Question 33

Functional classes of neuron

Answer 33

Sensory, Motor, Interneuros

Question 34

2 types of Astrocytes

Answer 34

Protoplasmic astrocytes, Fibrous astrocytes

Question 35

Ion channels

Answer 35

Leakage gated channels, Ligand gated channels, mechanically gated channels, voltage gated channels

Question 36

Neurotransmitters

Answer 36

Acetylcholine, Amino acids, Biogenic Amines, Neuropeptides, Nitric oxide