Ch 10

studied byStudied by 0 people
0.0(0)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions

1 / 48

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

49 Terms

1

3 types of muscle tissue

Skeletal, cardiac, smooth

New cards
2

Muscular system

ONLY skeletal muscles; each muscle is considered an organ

New cards
3

Funtions of muscle

Movement, Stability, Control of body openings and passages, heat production

New cards
4

Movement for Muscles

to move body parts, body contents, and to communicate

New cards
5

Stability in Muscles

Maintain posture and resist pull of gravity

New cards
6

Excitability (Responsivenes)

react to stimuli

New cards
7

What is another name for excitability?

Responsiveness

New cards
8

Condutivity

Spread electriacal impulse through muscle cell

New cards
9

Contractility

Shorten when stimulated

New cards
10

Extensibility

Can stretch without harm

(Lengthen beyond normal position without being harmed)

New cards
11

Elacticity

Can recoil from stretch

New cards
12

Skeletal

Voluntary, striated, attached to bone, contains muscle cell (muscle fiber/myofiber)

New cards
13

Skeletal muscle cell

Muscle fiber / Myofiber

New cards
14

Cardiac

Involuntary, striated, cardiomyocyte cell

New cards
15

Cardiac Cell is called

Cardiomyocyte

New cards
16

Smooth

Involuntary, non-striated, fusiform shaped

New cards
17

Fusiform cell shape

(diamond shape) tapered at ends

New cards
18

Structures of a muscle fiber

Sarcolemma

Sarcoplasm

Sarcoplasmic reticulum

New cards
19

Sarcolemma

Have Transverse (T) Tubules (invaginations of the sarcolemma)

New cards
20

Sarcoplasm

Contain myofibrils, glycogen, and myoglobin

New cards
21

Sarcoplasmic reticulum

A modified ER located with calcium + contains terminal cisterns

New cards
22

T/F : Calcium is not important

FALSE; Calcium is important as it aids muscle contractions.

New cards
23

Myofilaments

Contractile proteins and regulatory proteins

New cards
24

What are the types of myofilaments?

thick and thin filaments

New cards
25

Thick myofilament

Are Myosin

New cards
26

Thin myofilament

Are actin

New cards
27

Fibrous (F) actin

The part that resembles a necklace

New cards
28

Globular (G) actin

The bead in the necklace

New cards
29

Active Site

Myosin binding area on G actin

(Blocked by tropomyosin)

New cards
30

Regulatory proteins

Regulate when contraction occurs; consist of tropomyosin and troponin

New cards
31

Tropomyosin

Blocks active sites when the muscle relaxes

New cards
32

Troponin

Attaches to tropomyosin and binds to calcium when excited

New cards
33

Striations

narrows stripes that run perpendicular to the length of the cell

<p>narrows stripes that run perpendicular to the length of the cell</p>
New cards
34

What are striations composed of?

Z lines, I band, A band, M line, H band

New cards
35

Sarcomeres

Goes from one Z-disc to another Z-disc, which consist of:

- A Band

- H Band

- M-Line within

<p>Goes from one Z-disc to another Z-disc, which consist of:</p><p>- A Band</p><p>- H Band</p><p>- M-Line within</p>
New cards
36

A band

DARK stripe of thick myofilaments that partly overlap thin myofilaments

(Memory Trigger: Dark has an A in it)

New cards
37

H Band

Central region of A band that is a little lighter due to lack of thin myofilaments

New cards
38

M Line

Midline of A band (and H) that anchors thick myofilaments together

New cards
39

I Band

Light strip of thin myofilaments only

(Memory Trigger: i in light)

New cards
40

Z Disc (Z-Line)

- Midline of I band

- defines boundaries of sarcomere

- anchors actin and titin

New cards
41

During heavy exercise, the muscular system receives more than _________ of the heart's output.

3/4

New cards
42

Myasthenia gravis (MG)

autoimmune disease, destruction of neurotransmitter receptors

New cards
43

Muscular dystrophy

- Defective gene for dystrophin (a muscle protein)

- Skeletal muscle degeneration

New cards
44

Myopathies

diseases of muscle

New cards
45

Multiunit

independent control of smooth muscle cells

New cards
46

Unitary

Several cells excited at once; widespread in viscera

New cards
47

Synaptic Knob

Contains neurotransmitters

New cards
48

Synaptic cleft

The space where neurotransmitters are released

New cards
49

Postsynaptic membrane folds

Contains receptors to receive neurotransmitters

New cards

Explore top notes

note Note
studied byStudied by 64 people
213 days ago
4.7(3)
note Note
studied byStudied by 26 people
891 days ago
5.0(1)
note Note
studied byStudied by 25 people
514 days ago
5.0(1)
note Note
studied byStudied by 4 people
688 days ago
5.0(1)
note Note
studied byStudied by 16 people
903 days ago
5.0(1)
note Note
studied byStudied by 10 people
760 days ago
5.0(1)
note Note
studied byStudied by 67 people
701 days ago
5.0(4)
note Note
studied byStudied by 44 people
758 days ago
5.0(3)

Explore top flashcards

flashcards Flashcard (92)
studied byStudied by 11 people
841 days ago
4.0(1)
flashcards Flashcard (116)
studied byStudied by 10 people
800 days ago
5.0(1)
flashcards Flashcard (43)
studied byStudied by 15 people
3 days ago
5.0(1)
flashcards Flashcard (57)
studied byStudied by 17 people
750 days ago
5.0(2)
flashcards Flashcard (40)
studied byStudied by 2 people
177 days ago
5.0(1)
flashcards Flashcard (71)
studied byStudied by 42 people
385 days ago
5.0(4)
flashcards Flashcard (82)
studied byStudied by 41 people
88 days ago
5.0(1)
flashcards Flashcard (222)
studied byStudied by 29 people
646 days ago
5.0(1)
robot