Diagnostic Imaging & Interrelationships in Body Systems Flashcards

1
Q

diagnostic imaging

A

process of producing pictures of body structures & organs
- detect abnormalities to determine extent of disease & evaluate treatments
- used when performing biopsies & procedures

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2
Q

x-rays

A

electromagnetic energy beams to make images of internal tissues, bones, and organs on film

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3
Q

what does an x-ray show?

A

shadows of bones

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4
Q

ultrasound

A

exposure to high-frequency sound waves to produce pictures inside the body

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5
Q

what does an ultrasound show?

A

structure & movement of internal organs and blood flow

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6
Q

CT scanning

A

uses an x-ray scanner rotating around the patient, constructing a cross-section image “slices”

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7
Q

MRI

A

a magnetic chamber causes hydrogen atoms in the body to line up & radion waves mixes and realigns them

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8
Q

necessary life functions - maintain boundaries

A

necessary so that the organism’s inside remains distinct from its outside

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9
Q

NLF - movement

A

activities and the movement of substances through the body systems

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10
Q

NLF - responsiveness

A

ability to sense changes (stimuli) in the environment and to react accordingly

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11
Q

NLF - digestion

A

process of breaking down ingested food for bodily use

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12
Q

NLF - metabolism

A

all chemical reactions that occur within body cells

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13
Q

NLF - excretion

A

process of removing wastes from the body

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14
Q

NLF - reproduction

A

production of offspring

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15
Q

NLF - growth

A

increase in size and number of cells in the organism

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16
Q

homeostasis

A

constant internal environment

17
Q

3 components of control mechanisms

A

receptor (sensor)
control center
effector

18
Q

negative feedback

A

“thermostat-like” function
- shuts off original stimulus or reduces its intensity
ex. blood sugar or heavy breathing after a workout

19
Q

positive feedback

A

increases the original stimulus to push the variable farther
ex. blood clotting, childbirth

20
Q

survival needs

A

nutrients
oxygen
water
stable body temp
atmospheric pressure