Human Body Review

1. How does blood travel from your heart to your extremities, such as your arms and legs?

• through the veins

• through the capillaries

• through the arteries

• through carbon dioxide

A byproduct of respiration is:

• Blood

• Oxygen

• Air

• Carbon Dioxide

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Which of the following is an example of chemical digestion?

• 1. A whole grape enters your mouth and your teeth break it into smaller pieces that are easier to swallow.

• 1. The bagel you ate this morning finally leaves your body as a waste material called feces.

• 1. Your body uses the eggs you had for breakfast to gain energy, grow, and heal.

• 1. Small pieces of chewed hamburger are broken down into smaller molecules by enzymes.

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Which of the following options best describes how the spinal cord and brain work together?

• 1. Messages travel to and from the brain to other parts of the body through the spinal cord.

• 1. The spinal cord controls body movement and the brain controls coordination.

• The spinal cord sends messages to the brain, telling it what functions to perform.

• 1. The spinal cord is a bone in the back that supports your skull, which houses the brain.

Which of the following is an example of an involuntary movement?

• your stomach growling

• 1. snapping your fingers

• moving your leg

• moving your arm

Which of the following best describes a way the endocrine system affects the reproductive system?

• 1. The endocrine system directly produces sperm cells in men and ovarian cells in women, both necessary for puberty.

• 1. The reproductive system produces hormones that are necessary for the endocrine system to function properly.

• The endocrine system produces hormones that make puberty possible.

• 1. The endocrine system regulates mood and metabolism, both necessary for reproduction.

The respiratory system is part of the excretory system because

• It eliminates body waste

• It excretes liquid waste dioxide

• 1. It excretes sweat through the skin

• It involves the kidneys

Why do lymph nodes swell?

• Your skin fought off pathogens that tried to enter your body.

• Your body is fighting against germs it considers invaders.

• Your lymph level is low and that's why the body is working hard.

• 1. Your body is not producing enough lymphocytes

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Homeostasis is:

• the process by which nutrients are absorbed in the villi of the small intestine

• the tendency of the body to maintain internal balance despite changes in external conditions

• the exchange of oxygen and carbon dioxide in the lungs

• the filtration of blood in the kidneys that produces urine

  
  

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Which of the following are parts of the circulatory system?

• blood, lungs, lymph nodes

• kidneys, blood vessels, esophagus

• Blood, blood vessels, heart

• Skin, heart, bones