Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy Lecture > Nervous Tissue - E4 > Flashcards

Nervous Tissue - E4 Flashcards

1
Q

Composition of the central nervous system

A

brain and spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Composition of the peripheral nervous system

A

Somatic NS - voluntary
Autonomic NS - involuntary
Enteric NS - involuntary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

“Entero”

A

small intestine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

sympathetic

parasympathetic

A

excite
relax
both motor portion of autonomic NS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Another name for autonomic NS

A

visceral NS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

2 major cell types of the nervous tissue

A

neurons - conduct action potentials

neuroglia - support/aid neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is an action potential?

A

movement/gradient of chemicals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

properties of neurons

A
  1. excitability - respond to stimuli
  2. conductivity - create electrical signals
  3. secretion - release chemical messengers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Chromatophilic substance

A

also called Nissl bodies

dense networks of rough ER in the soma of neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Dendrites vs Axons

A

dendrites receive the signals, highly branches

axons send the signals, long w/few branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

axoplasm

axolemma

A

cytoplasm of axon

plasma membrane of axon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Terminal arborization

A

synapses w/another neuron, muscle, gland, or cell

contain terminal boutons that contain the chemical messengers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Structural classification of neurons

A
  1. multipolar - many dendrites, 1 axon
  2. bipolar - 1 dendrite, 1 axon
  3. unipolar - 1 process which branches
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Functional classification of neurons

A

based on direction the impulse travels

  1. sensory (afferent) - receptor to CNS
  2. motor (efferent) - CNS to effector
  3. association (interneurons) - connect sensory and motor

SAME

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Neuroglia in general

A

supportive cells
cover non-synaptic parts of neurons
can divide and multiply
outnumber neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

CNS neuroglia

A
  1. astrocytes: largest & most common, form supportive network, contribute to blood-brain barrier
  2. oligodendrocytes: form myelin sheath in CNS
  3. microglia: derived from WBCs, phagocytes
  4. ependymal cells: produce cerebrospinal fluid, epithelial cells, line ventricles and central canal
17
Q

PNS neuroglia

A
  1. Schwann cells: form myelin sheath in PNS

2. Satellite cells: support cells in ganglia, surround somas

18
Q

Myelin Sheath

A

Lipoprotein

Electrically insulates axon

19
Q

Node of Ranvier

A

myelin sheath gap = bare axolemma

20
Q

Nerve fiber

A

axon (usually) or dendrite

21
Q

nerve

A

bundle of fibers in PNS w/C.T. coats

  1. epineurium - surrounds entire nerve
  2. perineurium - surrounds fascicle
  3. endoneurium - surrounds single fibers
22
Q

tract

A

bundle of fibers in CNS (no C.T.)

23
Q

Ganglion

A

“knot”

collection of neuron somas in PNS

24
Q

Nucleus

A

collection of neuron somas in CNS

25
Q

White matter vs. Gray matter

A

white - myelinated axons (conduction)

gray - somas, unmyelinated axons, neuroglia (decision-making)

Anatomy Lecture (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions