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Animal Phys Exam 2 material > Lecture 9 & 10 > Flashcards

Lecture 9 & 10 Flashcards

0
Q

Cells with electrical activity

A

Neurons

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1
Q

A network of neurons and support (glial) cells

A

Nervous system

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2
Q

How signals travel in nervous system

A

Signals pass from sensory receptors/neurons, and are integrated, new signals are generated and conducted through neurons to the effector cells.

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3
Q

Info from internal/external environment to brain

A

Sensory neuron

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4
Q

Effector cell

CNS -> body

A

Motor neuron

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5
Q

Neurons that are entirely in CNS

A

Interneurons

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6
Q

What does the nervous system help animals do?

A

Regulate muscle contraction (movement)

Regulate secretions from glands (hormone, enzymes, saliva, etc.)

Gather info about external and internal environment -> maintain homeostasis (detect pain, pressure, chemical concentrations)

Stimulate thirst, hunger, other survival mechanisms

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7
Q

2 key characteristics of central nervous system

A

Centralization & cephalization

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8
Q

Neurons organized in to a central integrating area

Brain and spinal cord

A

Centralization

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9
Q

Concentration of nervous structures into one end of the body towards the head

Brain
Most animals walk on all 4s

A

Cephalization

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10
Q

Afferent

A

To CNS

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11
Q

Efferent

A

Away from CNS

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12
Q

Spinal cords 2 types of neural circuits

A

Local

Ascending/descending

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13
Q

Cell bodies, synapses, unmyelinated axons, outside region of brain

A

Grey matter

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14
Q

Tracts of myelinated axons, inner portion of brain

Ascending and descending

A

White matter

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15
Q

Bundle of myelinated axons in the CNS

A

Tract

16
Q

Groups of nerve cell bodies in the CNS

A

Nuclei

17
Q

A bundle of neuron axons in the peripheral nervous system

A

Nerve

18
Q

A grouping of cell nerve bodies in the peripheral nervous system

A

Ganglion

19
Q

Any nervous tissue located outside of the brain and spinal cord

A

Peripheral nervous system

20
Q

2 key divisions of PNS

A

Somatic & autonomic

21
Q

“Processing center” where incoming messages go and outgoing messages originate

A

Cerebral cortex

22
Q

Cell able to generate and propagate an electrical signal

A

Neurons

23
Q

4 key parts of the neuron

A

Dendrites- input
Cell body(soma) - integration (processing)
Axon - transmission
Pre-synaptic terminals - output

24
Q

Compared to the endocrine system…the nervous system is _____ and _____

A

Fast & addressed

25
Q

Resting membrane potential

A

-65mV

Animal Phys Exam 2 material (4 decks)

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