Chapter 10 (Part 3) Flashcards Preview

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Flashcards in Chapter 10 (Part 3) Deck (21)
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1
Q

Where is cardiac muscle found?

A

myocardium

2
Q

What are the function of cardiac muscle?

A

propel blood out of heart, maintain blood pressure

3
Q

What is the shape of cardiac muscle?

A

short branched, striated

4
Q

How many nuclei do cardiac muscle have?

A

1-2

5
Q

Specialized junctions in cardiac muscle

A

intercalated disc

6
Q

What nervous system controls cardiac muscle?

A

autonomic

7
Q

Where are smooth muscles found?

A

Walls of hollow organs, along passageways, internal sphincters, arrector pili, iris

8
Q

What are the functions of smooth muscle along hollow organs?

A

mix material, strengthen organ, propel material

9
Q

what are the functions of smooth muscle along passageways?

A

control diameter, propel material, breakdown material, regulate passageway

10
Q

what is the shape of smooth muscle?

A

wide middle with tapered ends

11
Q

how many nuclei do smooth muscle have?

A

1

12
Q

Location where intermediate filaments interact with the sarcoplasm

A

dense bodies

13
Q

location where intermediate filaments attach to sarcolemma

A

Dense plaques

14
Q

What nervous system are smooth muscle controlled by?

A

autonomic

15
Q

fibers receive stimulation to contract individually

A

multiunit smooth muscle

16
Q

where are multiunit smooth muscle found?

A

iris, arrector pili, larger arteries, large passageways for respiratory system

17
Q

Fibers stimulated to contract in unison

A

Single unit smooth muscle

18
Q

Where are single unit smooth muscle found?

A

Wales of digestive, urinary, reproductive tracts, most blood vessels

19
Q

Invagination of sarcoma with SR contacting it

A

caveolae

20
Q

Allow contraction to be signaled using different modalities

A

Sparse SR

21
Q

Myosin heads have modifications that allow them to latch onto actin and remain attached without using additional ATP

A

Latchbridge mechanism