Nervous and Circulatory System

Which of these activities does not build endurance?

• running

• solving puzzles

• swimming

Capillaries are ____________ of the body.

• chambers

• blood vessels

• nerves

The _____ of the heart receives oxygen-rich blood from the lungs.

• left side

• right side

• septum

The mineral which helps give blood its red color is _____.

• salt

• magnesium

• iron

The heart is a(n) _____ of the body.

• tissue

• cell

• organ

• system

The _____ is the transparent part in the outer layer of the eye.

• cornea

• iris

• lens

• sclera

The outer ear and inner ear are separated by a thin piece of tissue called the ______.

• eardrum

• auditory canal

• cochlea

The ________ help(s) your body sense balance.

• auditory canal

• semicircular canals

• eardrum

The olfactory nerve is a ______ nerve.

• sensory

• motor

• auditory

• sight

The study of the structure and parts of the body is called ________.

• anatomy

• botany

• zoology