Human Body Systems Quizs

The skin's outer layer is called the epidermis, and the layer beneath it is the _____________.

• epidermis

• hypodermis

• dermis

• stratum corneum

The muscular tube that connects the throat to the lungs is the _____________.

• trachea

• esophagus

• bronchus

• pharynx

Gas exchange occurs in tiny air sacs in the lungs called _____________.

• bronchi

• alveoli

• trachea

• capillaries

The digestive system breaks down food into ____________ that the body can use.

• vitamins

• nutrients

• enzymes

• carbohydrates

The flexible connective tissue found in joints that provides cushioning is called _____________.

• cartilage

• ligament

• tendon

• bone

Skeletal muscles are responsible for ____________ movement.

• involuntary

• reflexive

• voluntary

• automatic

The lymphatic system helps to maintain fluid balance by draining fluid from body _____________.

• tissues

• organs

• cells

• blood

The soft tissue inside bones that produces blood cells is called bone ____________.

• marrow

• cartilage

• tendon

• ligament

The powerful muscle that pumps blood throughout the body is the _____________.

• lungs

• heart

• liver

• kidneys

The stomach's main function is to mix food and begin the digestion of _____________.

• carbohydrates

• fats

• proteins

• vitamins