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Ninth Grade (Grade 9) Anatomy and Physiology Questions

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Grade 9 Circulatory and Immune Systems
The lymphatic system primarily serves to
  1. open two-way vessels.
  2. help the body fight infections.
  3. interact with the respiratory system.
  4. transport fluids away from the heart.
Grade 9 Respiration, Digestion, and Excretion
The kidneys secrete or absorb water to control                .
  1. tonicity
  2. liver function
  3. blood volume
  4. urea production
Grade 9 Nervous and Endocrine Systems
What is a neuron?
  1. a nerve cell that serves as a key structural and functional component of the nervous system and that allows for the movement of nerve impulses
  2. a nerve fiber that protects the brain
  3. an involuntary action that links with the hypothalamus in the brain
  4. a nerve tissue that controls voluntary actions
Grade 9 Respiration, Digestion, and Excretion
Which process occurs primarily by structures A and B in the diagram?
Digestive System
  1. chemical digestion
  2. nutrient absorption
  3. peristaltic movement
  4. mechanical digestion
Grade 9 Respiration, Digestion, and Excretion
The stomach breaks down
  1. fats.
  2. proteins.
  3. vitamins.
  4. carbohydrates.
Grade 9 Skin, Skeleton, and Muscles
What is the purpose of the muscular system?
  1. digestion
  2. movement
  3. tendonitis
Grade 9 Skin, Skeleton, and Muscles
The                 is a muscular partition that helps humans to breathe.
  1. intercostal
  2. soleus
  3. oblique
  4. diaphragm
Grade 9 Circulatory and Immune Systems
Which cells make and release antibodies into the human bloodstream?
  1. plasma cells
  2. helper T cells
  3. macrophages
  4. cytotoxic T cells
Grade 9 Human Reproduction
What is the function of the placenta?
  1. mixing the blood of the mother and fetus
  2. protecting the fetus from any drugs or alcohol in the mother's body
  3. providing nutrients to the fetus
  4. cushioning and protecting the fetus
Grade 9 Circulatory and Immune Systems
What is the heart?
  1. an organ with four chambers that pumps blood
  2. a small blood vessel that connects veins to the lungs
  3. a large blood vessel that connects the lungs to the reproductive organs
  4. an organ that filters wastes and can produce urea
Grade 9 Nervous and Endocrine Systems
The lower half of the brain stem is the                .
  1. cerebellum
  2. cerebrum
  3. medulla
  4. optic nerve
Grade 9 Respiration, Digestion, and Excretion
Which process occurs in structure D in the diagram?
Digestive System
  1. chemical digestion
  2. nutrient absorption
  3. peristaltic movement
  4. mechanical digestion
Grade 9 Respiration, Digestion, and Excretion
The stomach produces                            and                            to digest food.
  1. mucus; bile
  2. bile; enzymes
  3. pancreatic juice; insulin
  4. hydrochloric acid; enzymes
Grade 9 Nervous and Endocrine Systems
Which gland controls the activities of all other endocrine glands?
  1. pituitary gland
  2. pineal gland
  3. pancreas
  4. parathyroid gland
Grade 9 Respiration, Digestion, and Excretion
What is the trachea?
  1. a large tube through which air is transported to the lungs
  2. a main organ in the respiratory system that a human needs to survive
  3. a network of small tubes that feeds into ventricles
  4. the throat
Grade 9 Circulatory and Immune Systems
Antibodies recognize and bind to
  1. B cells.
  2. T cells.
  3. antigens.
  4. plasma cells.
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