Grade 6 Science Quiz on Human Body Structure

What are the three types of muscles in the human body?

• Cardiac, Rigid, Smooth

• Smooth, Rigid, Flexible

• Skeletal, Cardiac, Elastic

• Skeletal, Cardiac, Smooth

What is the main function of bones?

• To produce energy

• To protect vital organs

• To absorb nutrients

• To store water

Which type of joint allows for rotation?

• Gliding joint

• Pivot joint

• Ball and socket joint

• Hinge joint

What is the function of the skeletal system?

• To circulate blood

• To regulate temperature

• To support and protect the body

• To digest food

What condition is caused by a deficiency of calcium in bones?

• Skoliosis

• Osteoporosis

• Kifosis

• Lordosis

What part of the nervous system is responsible for processing information?

• Muscles

• Bones

• Brain

• Skin

What is the role of neurons?

• To produce hormones

• To store minerals

• To transmit signals

• To protect organs

Which type of joint allows movement in two directions?

• Hinge joint

• Ball and socket joint

• Pivot joint

• Saddle joint

What is the main function of the spinal cord?

• To digest food

• To connect the brain to the body

• To store fat

• To produce blood cells

What happens to muscles during contraction?

• They lengthen

• They become rigid

• They relax

• They shorten