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Biology > Control + Communication > Flashcards

Flashcards in Control + Communication Deck (23):
0

What is the cerebrum?

It is largest part of the brain and it controls your conscious thoughts and activities

1

What is the cerebellum?

Part of the brain that controls balance and coordinates muscle movements

2

What is the medulla?

Part of the brain that controls activities we are not consciously aware of like breathing and our heart rate

3

What are the order of neurons in a reflex arc?

Sensory --> relay --> motor

4

What are hormones?

Chemical messengers that send messages from one part of the body to another

5

What is the CNS?

Part of the nervous system made up of the brain and spinal cord

6

What is a neuron?

A nerve cell

7

What is a stimulus?

Information from the external environment

8

What is a receptor?

A cell that can detect a stimulus

9

What is an effector?

An organ that carries out a response, usually a muscle or a gland

10

What is a reflex arc?

It is the pathway of three neurons that brings about a rapid, involuntary response

11

What is a synapse?

The gap between two adjacent neurons

12

What is the chemical which transmits a nerve impulse across a synapse?

Neurotransmitter

13

What is the gland that produces and releases a hormone directly into the bloodstream?

An endocrine gland

14

What is a target cell?

A cell with receptors on its surface that recognise and bind into a specific hormone

15

What is the storage carbohydrate in animal cells?

Glucagon

16

What is the organ which produces the hormones, insulin and glucagon?

Pancreas

17

What is insulin?

A hormone which stimulates cells in the liver to remove glucose from the blood and concert it to glycogen for storage

18

What is diabetes?

A condition caused by the inability to control blood glucose level

19

In animals, what are the two types of control?

Nervous and hormonal

20

What is the function of the nervous system?

It is a communication system that uses electrical impulses to send messages from one part of the body to another

21

What are the spinal cords protected by?

The vertebrae

22

What is a reflex action?

It is a rapid automatic response to a stimulus