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Anat 1 > Lecture exam 3 > Flashcards

Lecture exam 3 Flashcards

1
Q

Properties of muscle tissue

A

Elasticity , Excitability, Contractility

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2
Q

Striated voluntary muscle

A

Skeletal muscle

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3
Q

Striated involuntary muscle

A

Cardiac Muscle

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4
Q

lack striations, involuntary muscle

A

Smooth muscle

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5
Q

outer layer of dense irregular connective tissue surrounds entire skeletal muscle

A

Epimysium

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6
Q

surrounding each fassicle is a layer of connective tissue consisting of reticular connective tissue called..

A

Perimysium

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7
Q

fine sheath of connective tissue consisting of mostly reticular fibers

A

Endomysium

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8
Q

long rod shaped organelles called..

A

Myofibrils

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9
Q

a myofibril is composed of repeating segments thin and thick filaments called …

A

Sarcomeres

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10
Q

boundaries at the two ends of each sarcomere are called ..

A

z discs or z lines

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11
Q

attached to the z discs are many fine myofilaments called…

A

thick and thin filaments

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12
Q

central part of an A band is the ..

A

H zone

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13
Q

center of H zone that contains tinry rods of thick filaments ….

A

M line

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14
Q

springlike molecule in sarcomeres that resists overstretching

A

Titin

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15
Q

deep invaginations of the sarcolema that run between each pair of terminals , stimulate the release of calcium

A

T tubules ( transverse tubules)

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16
Q

point at which the nerve ending and fiber meet

A

nueromuscular junction

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17
Q

smooth ER whose interconnecting tubules surround each myofibril like the sleeve of a loosely crocheted sweater surrounds your arm.

A

Sarcoplasmic Reticulum

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18
Q

thin filaments are composed of contractile protein called…

A

actin

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19
Q

regulatory proteins found in thin filaments …

A

Troponin, Tropomyosin

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20
Q

muscle fibers based on contraction

A

Slow oxidative fibers (SO)
Fast oxidative fibers (FO)
Fast glycolytic fibers (FG)

21
Q

muscle fibers based on how they produce energy

A 
Oxidative fibers (OF)
Glycolytic fibers (GF)
22
Q

arrangement of fassicle arranged in concentric rings, example is Orbicularis Occuli (constricts sphincters)

A

circular

23
Q

arrangement of fassicle converge
to a single tendon; example pectoralis major
( has a broad origin and narrow insertion)

A

convergent

24
Q

arrangement of fassicle run parallel to the long
axis; example is extensor digitorum superficialis
(allows greatest amount of movement)

A

parellel

25
Q

short fascicles, attach obliquely to a central tendon( has most muscle fibers)

A

pennate

26
Q

more muscle fibers =

A

more force

27
Q

longer muscle fibers =

A

more movement

28
Q

a rigid bar that moves

A

lever

29
Q

a fixed point

A

fulcrum

30
Q

applied muscle force

A

effort

31
Q

resistance (what ever things moving)

A

load

32
Q

Has major responsibility for a certain movement (agonist leader)

A

prime mover

33
Q

Opposes or reverses a movement

A

antagonist

34
Q

helps the prime mover, adds extra force , or reducing undesirable movement

A

synergist

35
Q

• A type of synergist that holds a bone firmly in

place

A

fixator

36
Q

gland that secretes a hormone controlling basal metabolic rate

A

Thyroid gland

37
Q

gland that secretes corticosteroids

A

Adrenal Glands

38
Q

gland that secretes at least 9 hormones indicating a “master gland” …aka Hypophysis

A

Pituatary gland

39
Q

organ that secretes hormones that control blood sugar levels

A

pancreas

40
Q

immune organ that also secretes hormones

A

Thymus

41
Q

gland that secretes melatonin, which help regulate circadium rhythms

A

Pineal gland

42
Q

commissure connecting left and right hemispheres

A

Corpus Callosum

43
Q

brain region where releasing and inhibiting hormones are released …

A

Hypothalamus

44
Q

Pituitary hormones released by anterior lobe …

A

TSH, ACTH, FSH, LH, GH, PRL

45
Q

Pituitary hormones released by posterior lobe

A

ADH, Oxytocin

46
Q

functions of nervous system

A

sensory input, integration , motor output

47
Q

brain and spinal cord

A

CNS

48
Q

nerves extending from brain and spinal cord - sensory and motor

A

PNS

49
Q

Neurotransmitters are found packaged inside____ in the axon terminal

A

vessicle

Anat 1 (12 decks)

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