Coordination and Control

Question 1

What are the 2 parts of the nervous system

Answer 1

Central Nervous System (CNS): Brain + Spinal Cord

Peripheral Nervous System (PNS): Nerves

Question 2

What are receptors

Answer 2

specialized structures that detect stimulus

Question 3

What are effectors

Answer 3

respond to stimulus

Question 4

What are reflexes

Answer 4

quick automatic responses to perceived threats

Question 5

What is the reflex pathway

Answer 5

Stimulus (heat)

Receptor (in skin)

Sensory neuron

Spinal cord (relay neuron)

Motor neuron

Effector (muscle)

Response (pull hand away)

Question 6

What are the 3 types of neurons

Answer 6

Sensory-Carry impulse from receptor to CNS
Relay-In spinal cord, connect neurons
Motor-Carry impulse from CNS to effector

Question 7

What is stimulus

Answer 7

A detectable change in an organism’s internal or external environment that triggers a response

Question 8

What happens when you’re hot

Answer 8

Sweat,blood vessels widen (vasodilation)

Question 9

What happens when you’re cold

Answer 9

Shiver, vessels narrow (vasoconstriction)