Chapter 1 - An Introduction to the Human Body Flashcards

1
Q

Abdominopelvic cavity

A

Division of the anterior (ventral) cavity that houses the abdominal and pelvic viscera

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2
Q

Anabolism

A

Assembly of more complex molecules from simpler molecules

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3
Q

Anatomical position

A

Standard reference position used for describing locations and directions on the human body

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4
Q

Anatomy

A

Science that studies the form and composition of the body’s structures

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5
Q

Anterior

A

Describes the front or direction toward the front of the body; also referred to as ventral

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6
Q

Anterior cavity

A

Larger body cavity located anterior to the posterior (dorsal) body cavity; includes the serous membrane-lined pleural cavities for the lungs, pericardial cavity for the heart, and peritoneal cavity for the abdominal and pelvic organs; also referred to as ventral cavity

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7
Q

Catabolism

A

Breaking down of more complex molecules into simpler molecules

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8
Q

Caudal

A

Describes a position below or lower than another part of the body proper; near or toward the tail (in humans, the coccyx, or lowers part of the spinal column); also referred to as inferior

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9
Q

Cell

A

Smallest independently functioning unit of all organisms; in animals, a cell contains cytoplasm, composed of fluid and organelles

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10
Q

Computed tomography (CT)

A

Medical imaging technique in which a computer-enhanced cross-sectional X-ray image is obtained

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11
Q

Control Center

A

Compares values to their normal range; deviations cause the activation of an effector

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12
Q

Cranial

A

Describes a position above or higher than another part of the body proper; also referred to as superior

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13
Q

Cranial cavity

A

Division of the posterior (dorsal) cavity that houses the brain

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14
Q

Deep

A

Describes a position farther from the surface of the body

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15
Q

Development

A

Changes an organism goes through during its life

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16
Q

Differentiation

A

Process by which unspecialized cells become specialized in structure and function

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17
Q

Distal

A

Describes a position farther from the point of attachment or the trunk of the body

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18
Q

Dorsal

A

Describes the back or direction toward the back of the body; also referred to as posterior

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19
Q

Dorsal cavity

A

Posterior body cavity that houses the brain and spinal cord; also referred to as the posterior body cavity

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20
Q

Effector

A

Organ that can cause a change in a value

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21
Q

Frontal plan

A

Two-dimensional, vertical plan that divides the body or organ into anterior and posterior portions

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22
Q

Gross anatomy

A

study of the larger structures of the body, typically with the unaided eye; also referred to as macroscopic anatomy

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23
Q

Growth

A

Process of increasing in size

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24
Q

Homeostasis

A

Steady state of body systems that living organisms maintain

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25
Q

Inferior

A

Describes a position below or lower than another part of the body proper; near or toward the tail (in humans, the coccyx, or lowest part of the spinal column); also referred to as caudal

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26
Q

Lateral

A

Describes the side or direction toward the side of the body

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27
Q

Magnetic Resonance Imaging (MRI)

A

Medical imaging technique in which a device generates a magnetic field to obtain detailed sectional images of the internal structures of the body

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28
Q

Medial

A

Describes the middle or direction toward the middle of the body

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29
Q

Metabolism

A

Sum of all the body’s chemical reactions

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30
Q

Microscopic anatomy

A

Study of very small structures of the body using magnification

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31
Q

Negative feedback

A

Homeostasis mechanism that tends to stabilize an upset in the body’s physiological condition by preventing an excessive response to a stimulus, typically as the stimulus is removed

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32
Q

Normal range

A

Range of values around the set point that do not cause a reaction by the control center

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33
Q

Nutrient

A

Chemical obtained from foods and beverages that is critical to human survival

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34
Q

Organ

A

Functionally distinct structure composed of two or more types of tissues

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35
Q

Organ system

A

Group of organs that work together to carry out a particular function

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36
Q

Organism

A

Living being that has a cellular structure and that can independently perform all physiological functions necessary for life

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37
Q

Pericardium

A

Sac that encloses the heart

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38
Q

Peritoneum

A

Serous membrane that lines the abdominopelvic cavity and covers the organs found there

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39
Q

Physiology

A

Science that studies the chemistry, biochemistry, and physics of the body’s functions

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40
Q

Plane

A

Imaginary two-dimensional surface that passes through the body

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41
Q

Pleura

A

Serous membrane that lines the pleural cavity and coves the lungs

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42
Q

Positive Feedback

A

Mechanisms that intensifies a change in the body’s physiological condition in response to a stimulus

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43
Q

Positron emission tomography (PET)

A

Medical imaging technique in which radiopharmaceuticals are traced to reveal metabolic and physiological functions in tissues

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44
Q

Posterior

A

Describes the back or direction toward the back of the body; also referred to as dorsal

45
Q

Posterior cavity

A

Posterior body cavity that houses the brain and spinal cord; also referred to as dorsal cavity

46
Q

Pressure

A

Force exerted by a substance in contact with another substance

47
Q

Prone

A

Face down

48
Q

Proximal

A

Describes a position nearer to the point of attachment or trunk of the body

49
Q

Regional anatomy

A

Study of the structures that contribute to specific body regions

50
Q

Renewal

A

Process by which worn-out cells are replaced

51
Q

Reproduction

A

Process by which new organisms are generated

52
Q

Responsiveness

A

Ability of an organisms or a system to adjust to changes in conditions

53
Q

Sagittal plan

A

two-dimensional, vertical plane that divides the body or organ into right and left sides

54
Q

Section

A

In anatomy, a single flat surface of a three-dimensional structure that has been cut through

55
Q

Sensor

A

(also receptor) reports a monitored physiological value to the control center

56
Q

Serosa

A

Membrane that covers organs and reduces friction; also referred to as serosa

57
Q

Set point

A

Ideal value for a physiological parameter; the level or small range within which a physiological parameter such as blood pressure is stable and optimally healthful, that is, within its parameters of homeostasis

58
Q

Spinal cavity

A

Division of the dorsal cavity that houses the spinal cord; also referred to as vertebral cavity

59
Q

Superficial

A

Describes a position nearer to the surface of the body

60
Q

Superior

A

Describes a position above or higher than another part of the body proper; also referred to as cranial

61
Q

Supine

A

Face up

62
Q

Systemic anatomy

A

Study of the structures that contribute to specific body systems

63
Q

Thoracic cavity

A

Division of the anterior (ventral) cavity that houses the heart, lungs, esophagus, and trachea

64
Q

Tissue

A

Group of similar or closely related cells that act together to perform a specific function

65
Q

Transverse plane

A

Two-dimensional, horizontal plane that divides the body or organ into superior and inferior portions

66
Q

Ultrasonography

A

Application of ultrasonic waves to visualize subcutaneous body structures such as tendons and organs

67
Q

Ventral

A

Describes the front or direction toward the front of the body; also referred to as anterior

68
Q

Ventral cavity

A

Larger body cavity located anterior to the posterior (dorsal) body cavity; includes the serous membrane-lined plural cavities for the lungs, pericardial cavity of the heart, and peritoneal cavity for the abdominal and pelvic organs; also referred to as anterior body cavity

69
Q

X-ray

A

Form of high energy electromagnetic radiation with a short wavelength capable of penetrating solids and ionizing gases; used in medicine as a diagnostic aid to visualize body structures such as bones

70
Q

What kind of catabolism occurs in the heart?

A

Fatty acid catabolism

71
Q

Water concentration in the body is critical for proper functioning. A person’s body retains very tight control on water levels without conscious control by the person. Which organ has primary control over the amont of water in the body?

A

??

72
Q

A CT or CAT scan relies on a circling scanner that revolves around the patient’s body. What type of radiation does a CT scanner use?

A

X-Rays

73
Q

A patient undergoing an MRI is surrounded by a tube-shaped scanner. What is the function of the magnets in an MRI?

A

???

74
Q

PET relies on radioactive substances administered several minutes before the scan. How is PET used in chemotherapy?

A

PET scans can indicate how patients are responding to chemotherapy

75
Q

Which of the following specialties focus on studying all of the structures of the ankle and foot?

a. Microscopic anatomy
b. Muscle anatomy
c. Regional anatomy
d. Systemic anatomy

A

c. Regional anatomy

76
Q

A scientist wants to study how the body uses foods and fluids during a marathon run. This scientist is most likely a(n) _____.

a. Exercise physiologist
b. Microscopic anatomist
c. Regional physiologist
d. Systemic anatomist

A

a. Exercise physiologist

77
Q

The smallest independently functioning unit of an organisms is a(n) ____.

a. Cell
b. Molecule
c. Organ
d. Tissue

A

a. Cell

78
Q

The body system responsible for structural support and movement is the _____.

a. Cadiovascular system
b. Endocrine system
c. Muscular system
d. Skeletal system

A

d. Skeletal system

79
Q

Metabolism can be defined as the ____.

a. Adjustment by an organism to external or internal changes
b. Process whereby all unspecialized cells become specialized to perform distinct functions
c. Process whereby new cells are formed to replace worn-out cells
d. Sum of all chemical reactions in an organism

A

d. Sum of all chemical reactions in an organism

80
Q

Adenosine triphosphate (ATP) is an important molecule because it _____.

a. Is the result of catabolism
b. Releases energy in uncontrolled bursts
c. Stores energy for use by body cells
d. All of the above

A

d. All of the above

81
Q

Cancer can be characterized as “generic” cells that perform no specialized body function. Thus cancer cells lack ______.

a. Differentiation
b. Reproduction
c. Responsiveness
d. Both reproduction and responsiveness

A

a. Differentiation

82
Q

Humans have the most urgent need for a continuous supply of ______.

a. Food
b. Nitrogen
c. Oxygen
d. Water

A

c. Oxygen

83
Q

Which of the following statements about nutrients is true?

a. All classes of nutrients are essential to human survival
b. Because the body cannot store any micronutrients, they need to be consumed nearly every day
c. Carbohydrates, lipids, and proteins are micronutrients
d. Macronutrients are vitamins and minerals

A

?

84
Q

C.J. is stuck in her car during a bitterly cold blizzard. Her body responds to the cold by ______.

a. Increasing the blood to her hands and feet
b. Becoming lethargic to conserve heat
c. Breaking down stored energy
d. Significantly increasing blood oxygen levels

A

c. Breaking down stored energy

85
Q

After you eat lunch, nerve cells in your stomach respond to the distention (the stimulus) resulting from the food. They relay this information to _____.

a. A control center
b. A set point
c. Effectors
d. Sensors

A

a. A control center

86
Q

Stimulation of the heat-loss center causes _____.

a. Blood vessels in the skin to constrict
b. Breathing to become slow and shallow
c. Sweat glands to increase their output
d. All of the above

A

d. All of the above

87
Q

All of the following is an example of a normal physiological process that uses a positive feedback loop?

a. Blood pressure regulation
b. Childbirth
c. Regulation of fluid balance
d. Temperature regulation

A

b. Childbirth

88
Q

What is the position of the body when it is in the “normal anatomical position?”

a. The person is prone with upper limbs, including palms, touching sides and lower limbs touching at sides.
b. The person is standing facing the observer, with upper limbs extended out at a ninety-degree angle from the torso and lower limbs in a wide stance with feet pointing laterally
c. The person is supine with upper limbs, including palms, touching sides and lower limbs touching at sides
d. None of the above

A

d. None of the above

89
Q

To make a banana split, you halve a banana into two long, thin, right and left sides along the _____.

a. Coronal plan
b. Longitudinal plane
c. Midsagittal plane
d. Transverse plane

A

c. Midsagittal plane

90
Q

The lumbar region is ____.

a. Inferior to the gluteal region
b. Inferior to the umbilical region
c. Superior to the cervical region
d. Superior to the popliteal

A

d. Superior to the popliteal

91
Q

The heart is within the ______.

a. Cranial cavity
b. Mediastinum
c. Posterior (dorsal) cavity
d. All of the above

A

b. Mediastinum

92
Q

In 1901, Wilhelm Rontgen was the first person to win the Nobel Prize for physics. For what discovery did he win?

a. Nuclear physics
b. Radiopharmaceuticals
c. The link between radiation and cancer
d. X-rays

A

?

93
Q

Which of the following imaging techniques would be best to use to study the uptake of nutrients by rapidly multiplying cancer cells?

a. CT
b. MRI
c. PET
d. Ultrasonography

A

c. PET

94
Q

Which of the following imaging studies can be used most safely during pregnancy?

a. CT scans
b. PET scans
c. Ultrasounds
d. X-rays

A

c. Ultrasounds

95
Q

What are the two major disadvantages of MRI scans?

a. Release of radiation and poor quality images
b. High cost and the need for shielding from the magnetic signals
c. Can only view metabolically active tissues and inadequate availability of equipment
d. Release of radiation and the need for a patient to be confined to metal tube for up to 30 minutes

A

c. Can only view metabolically active tissues and inadequate availability of equipment

96
Q

Name at least three reasons to study anatomy and physiology.

A

?

97
Q

For whom would an appreciation of the structural characteristics of the human heart come more easily; an alien who lands on Earth, abducts a human, and dissects his heart, or an anatomy and physiology student performing a dissection of the heart on her very first day of class? Why?

A

?

98
Q

Name the six levels of organization of the human body.

A

Cells, Tissues, Organs, Organ systems

99
Q

The female ovaries and the male testes are a part of which body system? Can these organs be members of more than one organ system? Why or why not?

A

?

100
Q

Explain why the smell of smoke when you are sitting at a campfire does not trigger alarm, but the smell of smoke in your residence hall does.

A

?

101
Q

Identify three different ways that growth can occur in the human body.

A

?

102
Q

When you open a bottle of sparkling water, the carbon dioxide gas in the bottle forms bubbles. If the bottle is left open, the water will eventually “go flat.” Explain these phenomena in terms of atmospheric pressure.

A

?

103
Q

On his midsummer trek through the desert, Josh ran out of water. Why is the particularly dangerous?

A

?

104
Q

Identify the four components of a negative feedback loop and explain what would happen if secretion of a body chemical controlled by a negative feedback system became too great?

A

?

105
Q

What regulatory process would your body use if you were trapped by a blizzard in an unheated, uninsulated cabin in the woods?

A

?

106
Q

In which direction would an MRI scanner move to produce sequential images of the body in the frontal plane, and in which direction would an MRI scanner move to produce sequential images of the body in the sagittal plane?

A

?

107
Q

If a bullet were to penetrate a lung, which three anterior thoracic body cavities would it enter, and which layer of the serous membrane would it encounter first?

A

?

108
Q

Which medical imaging technique is most dangerous to use repeatedly, and why?

A

?

109
Q

Explain why ultrasound imaging is the technique of choice for studying fetal growth and development

A

?