1. CRT Review Game
3rd quarter review

2. What protects your spinal cord?
A skull
B. Ribs
C. Vertebrae
D. Pelvic girdle

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5. ____are the smallest blood vessels in your body.
A. Arteries
B. Capillaries
C. Veins
D. Platelets

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8. _____are the blood vessels that direct blood away from the heart.
A. arteries
B. capillaries
C. veins
D. platelets

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11. The close arrangement of alveoli and capillaries allows
A. damaged red blood cells to be removed from the blood.
B. carbohydrates to move out of the blood into the lungs.
C. oxygen to diffuse from the alveoli into the blood.
D. carbon dioxide to diffuse from the alveoli into the blood.

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14. The lining of the small intestine is covered with villi that
A. break fat into small droplets.
B. contract to move food along.
C. neutralize the acid content of chyme
D. increase the surface area for nutrient absorption.

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17. Where does digestion begin?
A. In the mouth
B. In the stomach
C. in the small intestine
D. In the large intestine

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20. The breaking, crushing, and mashing of food is called
A. Chemical digestion
B. Mechanical digestion
C. Peristaltic digestion
D. Enzamatic digestion

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23. Arrange in order from least to most complex the following: heart, cardiac muscle, heart cell, circulatory system.
A. Circulatory system, heart, cardiac muscle, heart cell
B. Heart, heart cell, cardiac muscle circulatory system
C. Heart cell, cardiac muscle, circulatory system, heart
D. Heart cell, cardiac muscle, heart, circulatory system

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26. Explain the relation of an organ to a tissue.
A. Tissues are made of organs
B. Organs are made of tissues
C. There is not a relationship between an organ and a tissue
D. Tissues and organs are the same

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29. Which of the following is true of each of the four levels of organization of living things?
A. Each level is equal to each other
B. Each level is more complex than the level before it
C. Each level is less complex than the level before it
D. The levels of organization are for unicellular organisms

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32. What is the simplest unit of life?
A. cell
B. tissue
C. organ
D. Organ system

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35. Which of the following are functions of the skeletal system?
Stores materials
Produces blood
Stores fat
Protects soft organs
Allows movement
Excretes waste
A. I,II,III
C. I,II,III,IV,V,VI
D. I,II,III,IV,V
B. II,III,V,VI

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38. How are cartilage and bone related?
A. Most bone began as cartilage
B. Most cartilage began as bone
C. Bone and cartilage are the same
D. There is no relationship between bone and cartilage

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41. One of the main purposes of the human circulatory system is to take oxygen to all the cells in the body. Which of the following parts of whole blood makes this possible?
A. White blood cells
B. Red blood cells
C. Platelets
D. Plasma

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44. As blood flows to the heart from the toes and fingers, it travels mainly through tissue called what?
A. arteries
B. veins
C. capillaries
D. alveoli

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47. The heart is made of muscle and has four chambers, two on each side
The heart is made of muscle and has four chambers, two on each side. The left side contains mostly what kind of blood?
A. Blood with oxygen
B. Blood without oxygen
C. Blood that is blue in color
D. Blood with more platelets

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50. Redness and swelling may develop in an area near a wound
Redness and swelling may develop in an area near a wound. This reaction by the body means that white cell are being carried to that area by which of the systems?
A. Circulatory System
B. Nervous System
C. Muscular System
D. Skeletal System

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53. What are the main functions of blood?
A. Transport oxygen, break down food
B. Fight infection, transport nutrients
C. Transport oxygen, carbon dioxide, waste, nutrients, fight infection
D. Transport oxygen, relay messages between the brain and the body

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56. What is the function of white blood cells?
A. Clot blood
B. Transport oxygen
C. Fight infection
D. Transport carbon dioxide

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59. The reproductive system allows for the production of offspring and the continuation of life. What is true of sexual reproduction that brings together material from two parents?
A. Greater variation of life among animals who reproduce sexually
B. Lesser variation of life among animals who reproduce sexually
C. There is no variation of life among animals who reproduce sexually
D. Greater variation of life among animals who reproduce asexually

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62. The birth of a baby indicates that a fertilized egg developed in which of these structures?
A. ovary
B. testis
C. uterus
D. alveolus

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65. The testes produce A. estrogen B. progesterone
C. Estrogen and progesterone
D. Sperm and testosterone

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68. How do muscles help us move?
A. Both muscles contract together
B. One muscle contracts while the other relaxes
C. One muscle pulls and the other one pushes
D. Both muscles push at the same time

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71. Where is smooth muscle found?
A. In internal organs such as the stomach and intestines
B. In the heart
C. Attached to bones
D. Both in the heart and attached to bones

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74. What type of muscle allows the heart to continuously pump blood?
A. skeletal
B. Striated
C. Smooth
D. Cardiac

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77. What muscle type is attached to your bones for movement, and helps protect your inner organs?
A. skeletal
B. smooth
C. cardiac
D. involuntary

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80. Your body moves food through the digestive tract by using which type of muscle?
A. skeletal
B. smooth
C. cardiac
D. striated

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83. Because of the close arrangement of the capillaries and alveoli, what is allowed to happen?
A. Oxygen can diffuse from the alveoli into the blood
B. Carbon dioxide can diffuse from the alveoli into the blood
C. Oxygen can diffuse from the blood into the alveoli
D. Carbon dioxide can diffuse directly into the bloodstream

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86. What warms and filters the air we breathe?
A. nose
B. alveoli
C. trachea
D. diaphragm

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89. What is the function on the trachea?
A. Digest food
B. Take in air
C. Take food to the stomach
D. Aids in digestion

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92. What part of the respiratory system helps the rib cage expand and contract which helps in the process of breathing?
A. Smooth muscle
B. Cardiac muscle
C. trachea
D. Diaphgram and skeletal muscle

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95. A scientist studying the brain examines a tissue under a microscope
A scientist studying the brain examines a tissue under a microscope. Which statement best identifies a function of this nerve tissue type?
A. It breaks down food and processes it for use in the body
B. It conducts information from one part of the body to another
C. It moves oxygen and carbon dioxide throughout the body
D. It provides a basic framework and support system in the body

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98. What is the thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system.
A. brain
B. Spinal cord
C. blood
D. bones

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101. Which statement best describes how the nervous system helps a person react quickly after stepping on something sharp?
A. Electrical impulses are created by the muscles to move the foot away.
B. Each skin cell has pain receptors that directly cause muscle movement in the foot.
C. The muscles conduct pain impulses to the brain, which directs nerves to pull the foot away.
D. Signals travel on nerves to the spinal cord, which causes a reflex that pulls the foot away.

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104. Why are nerve cells essential to an animal?
A. They directly provide communication between cells
B. They help circulate blood through our body
C. They aid in digestion
D. They take oxygen into the body

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107. Describe how food moves through the digestive tract.
A. Mouth, esophagus, throat, stomach, small intestine, large intestine, rectum, and anus
B. Mouth, throat, esophagus, stomach, small intestine, large intestine, anus, rectum
C. Mouth, esophagus, throat, stomach, small intestine, large intestine, anus, rectum
D. Mouth, throat, esophagus, stomach, small intestine, large intestine, rectum, anus

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109. Great Job!

110. What function do the villi in the small intestine perform?
A. Increase the surface area for nutrient absorption
B. Decrease the surface area for nutrient absorption
C. Reabsorb liquid from undigested food
D. Compact waste from the digestive system

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113. What is the breaking, crushing, and mashing of food called?
A. Mechanical digestion
B. Chemical digestion
C. Digestive helpers
D. Chewing

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116. Where does digestion begin?
A. mouth
B. stomach
C. Small intestine
D. Large intestine

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119. Where does most chemical digestion occur?
A. mouth
B. stomach
C. Small intestine
D. Large intestine

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122. As blood flows from the heart to the toes and fingers, it travels mainly through tissue called
A. veins
B. alveoli
C. arteries
D. capillaries

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124. Great Job!