Human Body Systems 2

_____________ carry blood toward the heart.

The male reproductive structures that produce sperm are called ___________.

_____________ carry blood away from the heart.

The upper chambers of the heart are called the _______________.

The female sex cell is called a(n)_____________.

The gas we breathe in is called ______________.

The larynx is also called the _________.

The left side of the heart carries ___________ blood.

A ________ is how your nervous system reacts to something.

A fertilized egg is called a ________________.

Mechanical and chemical digestion starts in the _________________.

Tiny vessels where substances are exchanged between the blood and body cells are called ______.

The place where a neuron transfers an impulse to another structure is called ___.

A ________ is what your nervous system reacts to.

A branchlike structure that picks up nerve impulses is called _________.

The female reproductive structures that produce eggs is called ___________.

The tube that brings air into your lungs is called the _________.

The human heart has _______ chambers

The joining of an egg cell and a sperm cell is called ______________.

The main organs of the respiratory system are called ____________.

The ____________ pumps blood through the body through the blood vessels.

A protein that speeds up chemical reactions is called a(n) _____________.

The waste material we breath out is ____________.

The male sex cell is called a(n)_____________.

The small hair like structures that filter dust/germs from the air we breathe are called ____.

The tube that carries food from the back of your mouth to the stomach is called the __________.