Science Class Vocabulary

Question 1

Voluntary muscles

Answer 1

skeletal muscles that attach to bones and can be consciously activated to control movement

Question 2

involuntary muscles

Answer 2

muscles in the human body whose contraction is controlled by the autonomic nervous system

Question 3

smooth muscles

Answer 3

a type of muscle that contracts without any voluntary control, and it is made of a thin form of layers, which is made up of spindle-shaped, unstriated cells with only one nucleus and present in inner organs walls like bladder, intestine, stomach, blood vessels

Question 4

Cardiac Muscles

Answer 4

makes up the thick middle layer of the heart. It is one of three types of muscle in the body, along with skeletal and smooth muscle

Question 5

Epidermis

Answer 5

the top layer of the skin

Question 6

Dermis

Answer 6

the thick layer of living tissue below the epidermis which forms the true skin

Question 7

Hypodermis

Answer 7

the bottom layer of skin in your body

Question 8

joints

Answer 8

a point where two bones make contact

Question 9

chemical digestion

Answer 9

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

Question 10

enzymes

Answer 10

a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.

Question 11

saliva

Answer 11

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

Question 12

movable joints

Answer 12

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

Question 13

immovable joints

Answer 13

A type of joint between bones in which there is no joint cavity, and with very little or no movement is possible under normal conditions.

Question 14

bile

Answer 14

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

Question 15

goosebumps

Answer 15

a state of the skin caused by cold, fear, or excitement, in which small bumps appear on the surface as the hairs become erect.

Question 16

tendons

Answer 16

a flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.

Question 17

Cartilage

Answer 17

irm, whitish, flexible connective tissue found in various forms in the larynx and respiratory tract, in structures such as the external ear, and in the articulating surfaces of joints. It is more widespread in the infant skeleton, being replaced by bone during growth.

Question 18

skeletal muscles

Answer 18

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.