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Biology > Body Systems > Flashcards

Body Systems Flashcards

0
Q

What are the three parts of the Brian?

A

Cerebrum, cerebellum and the medulla

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1
Q

What is the CNS composed of?

A

Brain, spinal cord and nerves

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2
Q

What is the function of the cerebrum?

A

Mental processes, thought, memory, reasoning

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3
Q

What is the function of the cerebellum?

A

Controls balance and coordination

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4
Q

What is the function of the medulla?

A

Involuntary processes- heart and breathing rate

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5
Q

What is the order of neurones in the reflex arc?

A

Sensory-> Relay-> Motor

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6
Q

Sensory neurone does what?

A

Carries nerves impulses from receptor

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7
Q

What does the relay neurone do?

A

Transfers impulses from sensory neurone to motor neurone

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8
Q

What does the motor beaut one do?

A

Carries nervous impulses from CNS to effector muscles

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9
Q

Describe the reflex arc

A

Part of body comes into contact with hot object

Pain receptors detect sensory input and sends impulse to sensory neurone

Relay neurone passes the impulse to motor neurone at a synapse

Motor neurone carries impulse to muscles in contact with the pain

Muscles contact and move part or body away from danger

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10
Q

What are the four main chambers of the heart?

A

Right atrium, right ventricle, left atrium, left ventricle

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11
Q

What takes what to the lungs?

A

The pulmonary artery takes deoxygenated blood to the lungs

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12
Q

What takes what to the body?

A

The aorta takes oxygenated blood to the body

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13
Q

What takes blood from the lungs to the heart?

A

The pulmonary vein

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14
Q

What takes blood to the heart from the body?

A

The vena cava

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15
Q

Valves in the heart?

A

Stop the back flow of blood

16
Q

Artery?

A

Thick walls of muscle
Take blood away from the heart under high pressure
Have narrow central canals

17
Q

Vein?

A

Large channels with thin muscular walls
Carry blood to the heart under low pressure
Have valves to stop the back flow of blood

18
Q

Capillary?

A 
Microscopic blood vessels which are one cell thick
Connect arteries and veins
Run close to every cell in the body
Site of exchange of materials 
Form a network
Large surface area for efficiency

Biology (15 decks)

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