10 pt 1 nervous system

Question 1

The nervous system:
-c_______ a__________ and r__________ to the surroundings
-Allows various parts of the body to ____________ with one another quickly & help organisms r_______ to c________ in their environment quickly

Answer 1

-controls activities and reactions
-coordinate, respond to changes

Question 2

A reaction to a stimulus is known as a ________

Answer 2

response

Question 3

The ability of an organism to ________ and _______ to changes in the environment is known as ___________

Answer 3

detect, respond, sensitivity

Question 4

A change in environment that cause a ________ in an organism is known as a __________.

Answer 4

reaction, stimulus

Question 5

Nervous system consists of:
1.
2.

Answer 5

1. CNS (central nervous system)
2. PNS (peripheral nervous system)

Question 6

-

Answer 6

-brain
-spinal cord

Question 7

-

Answer 7

-nerves
-sense organs

Question 8

-

Answer 8

-spinal nerves (spinal cord)
-cranial nerves (in brain)

Question 9

________ in sense organs to detect stimulus, which then produces ______ signals called _____ _________. The signals are transmitted by ____________ _______ to _____

Answer 9

receptors, electrical, nerve impulses, peripheral nerves (cranial, spinal nerves), CNS

Question 10

CNS transmits impulses to _________, which are usually m_______ or g_____ that carries out responses, by ______.

Answer 10

effectors, muscles, glands, nerves

Question 11

3 types of nervous tissue:
-r
-r
-e

Answer 11

-receptor neurone (sensory)
-relay neurone (inter/intermediate)
-effector neurone (motor)

Question 12

A sensory neurone transmits nerve impulses from ______ to _________

Answer 12

receptors to CNS

Question 13

A relay neurone transmits nerve impulses within ______

Answer 13

CNS

Question 15

Voluntary actions are activities c_________ c__________. Nerve impulses are produced in ______ & may/may not involve __________ _________. (e.g. …)

Answer 15

controlled consciously, brain, sensory neurone (e.g. writing clapping)

Question 16

Path of nerve impulse for voluntary actions:
b_____->_______ ________->______ _______->__________

Answer 16

brain->relay neurone->motor neurone->effector

Question 17

Involuntary actions are activities NOT c_________ c__________. Reflex action is an immediate response to a specific _________ without c__________ c_______

Answer 17

controlled consciously, stimulus, conscious control

Question 18

2 types of reflex action:
-c
>controlled by _____ (u_______) & occurs in ____ area (eg …)
-s
>controlled by ___

Answer 18

-cranial reflex
>brain, unconsciously, head (eg salivating breathing)
-spinal reflex
>spinal cord