science vocab Flashcards

1
Q

voluntary muscles

A

muscle whose action is normally controlled by an individual’s will

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2
Q

involuntary muscles

A

muscle governing reflex functions and not under direct voluntary control

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3
Q

smooth muscles

A

an involuntary, non-striated muscle

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4
Q

skeletal muscles

A

a muscle which is connected to the skeleton to form part of the mechanical system which moves the limbs and other parts of the body.

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5
Q

cardiac muscles

A

makes up the thick middle layer of the heart.

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6
Q

epidermis

A

The outer layer of the two main layers of the skin.

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7
Q

dermis

A

The inner layer of the two main layers of the skin.

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8
Q

hypodermis

A

the bottom layer of skin in your body

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9
Q

joints

A

the part of the body where two or more bones meet to allow movement.

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10
Q

chemical digestion

A

the process where complex molecules like proteins, fats, and carbohydrates are broken down into smaller pieces that your body can use.

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11
Q

enzymes

A

a biological catalyst and is almost always a protein.

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12
Q

saliva

A

watery liquid secreted into the mouth by glands, providing lubrication for chewing and swallowing, and aiding digestion.

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13
Q

movable joints

A

the joints that are capable of moving in a variety of directions

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14
Q

immovable joints

A

the two or more bones are in close contact, but no movement can occur

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15
Q

bile

A

a bitter greenish-brown alkaline fluid that aids digestion and is secreted by the liver and stored in the gallbladder.

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16
Q

goosebumps

A

a roughness of the skin produced by erection of its papillae especially from cold, fear, or a sudden feeling of excitement.

17
Q

tendons

A

Tough, fibrous, cord-like tissue that connects muscle to bone or another structure, such as an eyeball.

18
Q

cartilage

A

A tough, flexible tissue that lines joints and gives structure to the nose, ears, larynx, and other parts of the body.