Human Biology Quiz 1 Review

The smallest unit of organization in the body is the

• cell.

• tissue.

• organ.

• nucleus.

A vessel that carries oxygen-rich blood to the heart muscle is called a(n)

• vein.

• atrium.

• ventricle.

• coronary artery.

A group of cells that receives messages about the body’s oxygen needs and sends out signals to adjust the heart rate is called the

• valve.

• atrium.

• lymph node.

• pacemaker.

The largest artery in the body is called the

• atrium.

• aorta.

• pacemaker.

• atrium.

Which of the following structures pumps blood into arteries leading to the lungs?

• left atrium

• left ventricle

• right atrium

• right ventricle

Your body uses glucose and oxygen to produce energy during the process of

• digestion.

• excretion.

• respiration.

• circulation.

A passageway for both air and food is the

• pharynx.

• larynx.

• trachea.

• bronchus.

The major organs of the excretory system are the

• kidneys.

• ureters.

• alveoli.

• lungs.

The waste chemical that comes from the breakdown of proteins in the body is called

• tar.

• urea.

• urethra.

• glucose.

Which of the following does the respiratory system move into the body?

• glucose

• urine

• urea

• oxygen