Body Coordination 2023

Question 1

Metabolism

Answer 1

All the chemical reactions occurring in the cells

Question 2

Enzyme

Answer 2

A chemical that speeds up the rate of a reaction

Question 3

Diffusion

Answer 3

The movement of particles of a substance from an area of high concentration to an area of low concentration

Question 4

Hormones

Answer 4

Chemical substances that act as messengers in the body

Question 5

Receptor

Answer 5

A specialised cell that detects stimuli (changes)

Question 6

CNS

Answer 6

Made up of the brain and spinal cord

Question 7

PNS

Answer 7

The nerves that carry messages to and from the CNS to other parts of the body

Question 8

Neuron

Answer 8

A nerve cell

Question 9

Nerve impulse

Answer 9

The electrical message carried by a nerve cell

Question 10

Axon

Answer 10

A nerve fibre that sends nerve impulses away from the cell

Question 11

Axon terminal

Answer 11

The very end of the axon that contains neurotransmitters and makes synaptic contact with the next neuron in the chain.

Question 12

Cell body

Answer 12

The part of a neuron that contains the nucleus

Question 13

Dendrite

Answer 13

Branches from the cell body that receives messages from other neurons

Question 14

Myelin sheath

Answer 14

The insulating layer that covers a neuron

Question 15

Sensory neurons

Answer 15

Nerve cells that carry messages from cells in the sense organs to the CNS

Question 16

Connector neurons

Answer 16

Neurons that transmit messages between neurons in the CNS

Question 17

Motor neurons

Answer 17

Nerve cells that carry messages from the CNS to the effectors

Question 18

Effectors

Answer 18

Muscles or glands that put the messages into effect

Question 18

Neurotransmitter

Answer 18

A chemical message released at the end of an axon to be received by the next neurons dendrites

Question 19

Synapse

Answer 19

The space between 2 neurons

Question 20

Cerebrum

Answer 20

The part of the brain that controls conscious thought, the movement of every body part, and receives sensory messages from each body part

Question 21

Cerebellum

Answer 21

The part of the brain that is responsible for coordination and balance

Question 22

Brain stem (medulla)

Answer 22

The part of the brain where the spinal cord enters the skull; it controls the bodies vital functions, such as eating, breathing, blood pressure and your heart rate

Question 23

Stimulus

Answer 23

Any factor that stimulates a receptor and brings about a response

Question 24

Reflex action

Answer 24

Quick, automatic actions that protect the body from danger; also known as reflexes

Question 25

Reflex arc

Answer 25

The nerve pathway operating in a reflex action

Question 26

Endocrine System

Answer 26

All the endocrine glands of the body

Question 27

Endocrine Glands

Answer 27

glands that produce hormones

Question 28

Target cells

Answer 28

the cells on which a hormone acts

Question 29

pituitary gland

Answer 29

the gland that controls the activities of all the other glands, often referred to ad the master gland

Question 30

Hypothalamus

Answer 30

the portion of the brain that constantly checks the internal environment of the body

Question 31

Homeostasis

Answer 31

the process od maintaining a constant internal environment