Human Body Systems

Your heart is made up of what type of muscle?

• Strong

• Cardiac

• Short

• Long

Muscles are connected to bones by

• Muscles

• tendons

• ligaments

Your veins have ______________ to keep your blood flowing in the right direction.

• plasma

• valves

• waste

Your spinal cord is part of your nervous system

• True

• False

Nerves that control your heartbeat and digestion are

• large

• chemical

• automatic

Which one is the MAIN organ of the respiratory system?

• nose

• alveoli

• lungs

The process of breathing is called

• inhale

• respiration

• oxygen

What is the tube that connects your mouth to your stomach?

• Small intestine

• esophagus

• vein

Your body absorbs many nutrients from the small intestine

• True

• False

Bones need calcium

• True

• false