Neurons

Question 1

Neurons

Answer 1

cells that transmit nerve impulses in the body

Question 2

Sensory or afferent neurons

Answer 2

bring info from sensory organs and receptors in the eyes, tongue, skin, ears, internal organs to CNS

Question 3

Motor or efferent neurons

Answer 3

take nerve pulses from the CNS to give commands to muscles, organs, glands, and other target cells

Question 4

Association or interneurons

Answer 4

-only in brain and spinal cord.
-makeup most neurons in the body
-connect sensory and motor neurons together

Question 5

Cell body of neuron

Answer 5

-nucleus and cell organelle
-Nissl body: the rough endoplasmic reticulum

Question 6

Dendrites

Answer 6

receive stimuli that trigger action potential

Question 7

Axon

Answer 7

-wrapped in fatty material called myelin made from Schwann cells
-myelin acts like insulation around a wire

Question 8

Synapse

Answer 8

gap that separates nerves from muscles, organs, glands, and other nerves

Question 9

Neurotransmitters

Answer 9

chemicals that travel across synapse to stimulate or inhibit nerve impulses

Question 10

Which nervous system relies on norepinephrine?

Answer 10

Peripheral nervous system (controls autonomic functions)