Human Body Systems Quiz

What is the primary function of skeletal muscles in the human body?

• To produce hormones

• To facilitate movement

• To store calcium

• To protect internal organs

Which layer of the skin is responsible for producing new skin cells?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous layer

What is the main mineral stored in bones?

• Potassium

• Sodium

• Calcium

• Iron

Which chamber of the heart receives oxygenated blood from the lungs?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What is the primary function of red blood cells?

• To fight infections

• To transport oxygen

• To clot blood

• To produce antibodies

Which protein is primarily responsible for muscle contraction?

• Myosin

• Keratin

• Collagen

• Elastin

Tags

NGSS.MS-LS3-1

What is the outermost layer of the skin called?

• Dermis

• Epidermis

• Hypodermis

• Subcutaneous layer

Which bone is known as the collarbone?

• Scapula

• Clavicle

• Sternum

• Humerus

What is the main function of the cardiovascular system?

• To digest food

• To circulate blood

• To produce hormones

• To filter waste

Which component of blood is responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma