Human Body Prior Knowledge Check

Between which two systems does gas exchange takes place?

• Gas exchange takes place between the respiratory and digestive systems.

• Gas exchange takes place between the circulatory and excretory systems.

• Gas exchange takes place between the respiratory and circulatory systems.

• Gas exchange takes place between the circulatory and nervous systems.

In which organ does gas exchange occur?

• The larynx.

• The diaphragm.

• The trachea.

• The alveoli.

Which of the following best describes exhalation?

• During exhalation, the diaphragm contracts and moves down.

• During exhalation, the diaphragm relaxes and moves up.

• During exhalation, the lungs contract and move down.

• During exhalation, the lungs relax and move up.

Which is a function of the excretory system?

• The excretory system brings nutrients from the stomach to the rest of the body.

• The excretory system regulates fluid levels in the body.

• The excretory system balances the oxygen levels in the body.

• The excretory system delivers sodium to the nervous system.

Which is the tube through which urine leaves the kidneys.

• Bladder

• Urethra

• Nephrons

• Ureter

Which of the following is not contained in sweat?

• water

• mineral salts

• urea

• CO₂

Which of the following statements about blood at location B is correct?

• Blood at location B is CO₂ rich because it comes from the lungs.

• Blood at location B is oxygen poor because it comes from the lungs.

• Blood at location B is oxygen rich because it comes from the lungs.

• None of these statements are correct.

State the general relationship between exercise and heart rate in humans.

• Heart rate will not change after exercise.

• Heart rate will increase after exercise.

• Heart rate will decrease after exercise.

• Heart rate can increase or decrease after exercise based on how healthy a person is.

Which are the smallest blood vessels in the body?

• arteries

• capillaries

• veins

• arterioles

What is the process in which the ovary and uterus go through 3 phases of change each month?

• the menstrual cycle

• pregnancy

• fertilization

• hormonal production