Lab Slides Flashcards

1
Q

Skeletal muscle (4)

A

Attached to bones
Striated
Multinucleated
Voluntary

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2
Q

Cardiac

A

Cells contract as a unit
Striated
1 nucleus per cell
Involuntary

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3
Q

Smooth muscle

A

Movement within internal organs
No striation
1 nucleus per cell
Involuntary

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4
Q

Epithelial Tissue

A

Sheets of tightly packed cells

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5
Q

What does Epithelial Tissue form?

A

Membranes and glands

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6
Q

Squamous example

A

Epidermis

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7
Q

Cuboidal example

A

salivary ducts

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8
Q

Columnar example

A

lining of digestive & resp tracts

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9
Q

Name the three epithelial

A

squamous, cuboidal, columnar

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10
Q

Exocrine glands

A

Have ducts
secrete chemicals outside body or into digestive tract

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11
Q

Endocrine glands

A

Do ducts
Secrete hormones into blood
(Adrenal gland)

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12
Q

Connective Tissue

A

Sparse scattering of cells in an extracellular matrix

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13
Q

Connective tissue function

A

Bind and Support

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14
Q

Connective Tissue Proper

A

Tendons, ligaments, adipose, dermis

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15
Q

Other Connective Tissue

A

Cartilage, bone, blood vessels

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16
Q

Sensitivity

A

Difference between high and setpoint (or low and setpoint)

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17
Q

Molality

A

moles solute/Kg solvent

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18
Q

pH (Mathmatically)

A

log(1/[H+])

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19
Q

pH of blood

A

7.4

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20
Q

Easily cross lipid bilayer

A

Non-polar
Small uncharged polar molecules

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21
Q

Don’t easily cross lipid bilayer

A

Charged
Large Polar Molecules (glucose)

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22
Q

Osmosis

A

Diffusion of water across a semi-permeable membrane

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23
Q

Osmolality

A

Multiply by # of particles

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24
Q

Hypertonic solution, cell does what

A

Crenates

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25
Q

Hypotonic solution, cell does what

A

bursts

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26
Q

Tool for measuring cholesterol

A

Colorimeter/spectrometer

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27
Q

Beer’s Law

A

Concentration of a material in solution is proportional to the amount of light absorbed by the solution

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28
Q

What kind of light does colorimeter use?

A

monochromatic

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29
Q

Name a chemical catalyst

A

Ferric Oxide

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30
Q

Saturation

A

all or most of the enzymes are bound to substrate molecules

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31
Q

Catalyst for Starch digestion

A

Amylase

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32
Q

Iodine Test

A

Detects Starch

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33
Q

Benedict’s Test

A

Detects Maltose

34
Q

Reflex

A

Involuntary motor response to stimulus without involvement of higher brain tissue

35
Q

Why reflexes

A

To prevent tissue damage

36
Q

Reflex arc

A

nerve impulse pathway of a reflex

37
Q

Afferent

A

Sends message to CNS

38
Q

Efferent

A

Sends message away from CNS to effector

39
Q

Monosynaptic reflex arc

A

Only 2 neurons
One neuron-neuron synapse

40
Q

Muscle Spindle

A

clusters of sensory cells in skeletal muscle

41
Q

Merkel’s Discs

A

Sustained Touch/Pressure

42
Q

Pacinian Corpuscle

A

Deep Pressure

43
Q

Ruffini Endings

A

Sustained Pressure

44
Q

Meissner’s Corpuscle

A

Texture

45
Q

Free Nerve Ending

A

Soft touch, hot, cold, nociception

46
Q

Receptor Field

A

Area of the skin that can activate a single neuron

47
Q

Sensory Adaptation

A

In response to constant stimulus, many receptors decrease firing rate

48
Q

Phasic receptors

A

Decrease firing rate in response to constant stimulus

49
Q

Diopter

A

1/focal length
Measurement of lens power

50
Q

Name of eye chart

A

Snellen chart

51
Q

20/60 vision

A

Near-sighted

52
Q

Rhodopsin

A

Photopigment in rod cells

53
Q

Positive Afterimage

A

Exposure to bright light results in continued perception of image after looking away

54
Q

Positive afterimage why?

A

Ganglia continue to fire because it takes time for photopigment to return to it’s original state

55
Q

Negative afterimage

A

Prolonged exposure to an object results in continued perception of image in opposite colors after looking away

56
Q

Negative afterimage why?

A

Sensory adaptation, cone becomes desensitized/photobleached
Opposite colors become sensitive

57
Q

Loudness of sound waves

A

Amplitude

58
Q

Normal Sound Range

A

20-20,000 Hz

59
Q

Auricle

A

Outer Ear

60
Q

External auditory meatus

A

Ear canal
(Outer ear)

61
Q

Tympanic membrane

A

Causes auditory ossicles to vibrate

Damage to it causes Conduction Deafness

(Middle ear)

62
Q

Auditory Ossicles

A

Bones
Transmit vibrations to inner ear
(Middle ear)
Malleus, Incus, Stapes

63
Q

Cochlea

A

Inner ear
Transduction of sound energy into electrical impulses

64
Q

Organ of Corti

A

Inner ear
Part of Cochlea
Contains hair cells

65
Q

Inner ear deafness called

A

Sensorineural deafness

66
Q

Conductive hearing loss test

A

Rinne Test

67
Q

Helicotrema

A

Far end of organ of corti

68
Q

Low frequencies produce displacement where?

A

End of cochlea
Apex
Near helicotrema

69
Q

Sarcomere

A

Z-disc to Z-disc

70
Q

Motor Unit

A

Motor neuron + all muscle fibers it controls

71
Q

Twitch

A

Single short contraction due to single pulse of stimulation

72
Q

Summation

A

Pulses of stimulation in rapid succession build on previous stimulus, adding to the response
Can’t fully relax between stimuli

73
Q

Tetanus

A

Complete muscle contraction

As stimulus frequency increases, summation occurs until tetanus is reached

74
Q

EMG

A

Measures electrical activity produced by contracting muscles

75
Q

Agonist

A

Muscle that’s causing movement

76
Q

Intrafusal fibers

A

Muscle spindles

77
Q

Extrafusal fibers

A

Normal muscle fibers

78
Q

Alpha motor neuron

A

Innervates EF fibers

79
Q

Gamma motor neuron

A

Innervates IF

80
Q

What does activation of gamma neuron do?

A

Spindle tightening
Increased sensitivity

81
Q

Endomysium

A

Between muscle fibers