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Ninth Grade (Grade 9) Anatomy and Physiology Questions

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Grade 9 Nervous and Endocrine Systems
The nerve cells that carry messages from the cells in the sense organs to the CNS are                .
  1. axons
  2. motor neurons
  3. relay neurons
  4. sensory neurons
Grade 9 Skin, Skeleton, and Muscles
Smooth muscles move the internal organs.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
What does the circulatory system consist of?
  1. brain, lungs, heart
  2. heart, lungs, blood
  3. heart, blood vessels, blood
  4. blood vessels, lungs, blood
Grade 9 Circulatory and Immune Systems
How many total chambers does the human heart have?
  1. 3
  2. 5
  3. 2
  4. 4
Grade 9 Circulatory and Immune Systems
The largest artery in the human body is the aorta.
  1. True
  2. False
Grade 9 Skin, Skeleton, and Muscles
The appendicular skeleton consists of all the following EXCEPT the
  1. elbow joint.
  2. shoulder girdle.
  3. scapula.
  4. ribs.
Grade 9 Skin, Skeleton, and Muscles
How many muscles are present in the human body?
  1. more than 600
  2. 400
  3. less than 100
  4. 116
Grade 9 Circulatory and Immune Systems
What are the components of the cardiovascular system in the human body?
  1. heart and lungs
  2. lungs and nose
  3. heart and circulatory system
  4. blood vessels and lungs
Grade 9 Circulatory and Immune Systems
Which are the blood vessels of the circulatory system?
  1. atria and ventricles
  2. arteries and heart
  3. platelets and plasma
  4. arteries and veins
Grade 9 Skin, Skeleton, and Muscles
The integumentary system is the organ system that
  1. protects the body from damage.
  2. helps to regulate sweat.
  3. regulates body heat.
  4. all of the above.
Grade 9 Nervous and Endocrine Systems
What is the internal stability, or "steady state," maintained by the body called?
  1. evolution
  2. population
  3. homeostasis
  4. natural selection
Grade 9 Circulatory and Immune Systems
Oxygen transport involves bonding oxygen with
  1. hormones.
  2. hemoglobin.
  3. white blood cells.
Grade 9 Skin, Skeleton, and Muscles
The dome-shaped muscle located at the bottom of the rib cage is the
  1. heart.
  2. lungs.
  3. alveoli.
  4. diaphragm.
Grade 9 Anatomical Organization
Cephalization refers to what?
  1. division of the body into upper and lower parts
  2. concentration of sense organs and nerve cells in the anterior end of the body
  3. joining together of specialized cells to form tissues
  4. formation of a body cavity between the germ layers
Grade 9 Skin, Skeleton, and Muscles
Skin color is determined by the amount of
  1. collagen.
  2. cuticle.
  3. dermis.
  4. melanin.
Grade 9 Skin, Skeleton, and Muscles
The muscle that opens a joint is a(n)                   .
  1. involuntary muscle
  2. smooth muscle
  3. tendonitis
  4. extensor
Grade 9 Skin, Skeleton, and Muscles
The bones that make up the toes and fingers in your body are the                .
  1. metacarpals
  2. phalanges
  3. carpals
  4. vertebra
Grade 9 Circulatory and Immune Systems
What does the cardiovascular system move?
  1. urine
  2. neurons
  3. oxygen, hormones, waste, and nutrients
  4. pathogens that cause disease
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