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2nd A&P Exam > Muscles > Flashcards

Flashcards in Muscles Deck (11)
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1
Q

What are 8 criteria for smooth muscles?

A

1 ) Found: bladder, intestines, and vessels 2 ) Function: to pump urine, food, and blood 3 ) # of Nucleus: 1 4 ) NOT BRANCHED 5 ) NO INTERCALATED DISCS 6 ) NO STRIATION 7 ) Random Actin/myosin Arrangement 8 ) Shape is spindle

2
Q

What are 8 criteria for Cardiac muscles?

A

1) Found in heart 2) function to pump blood 3) few nuclei 4) It is BRANCHED 5) Has intercalated discs 6) Has striation 7) Linear actin/myosin arrangement 8) Myotube shape

3
Q

What are 8 criteria for Skeletal muscles?

A

1) found on bone 2 function is to move bones 3) 100s of nuclei 4) Not branched 5) No intercalated discs 6) Has striations 7) Linear actin/myosin arrangement 8) myotube shape

4
Q

What is the skeletal muscle wrapped in?

A

epimysium

5
Q

What is the fascicle wrapped in?

A

perimysium

6
Q

What is the muscle fiber wrapped in?

A

endomysium

7
Q

What is the myofibril wrapped in?

A

sarcoplasmic reticulum

8
Q

What are tight junctions?

A

The connection of muscle cells glued together by proteins

9
Q

What makes up intercalated discs?

A

Fibrous protein (actin) and myosin

10
Q

What are the leaky channels in between muscle fibers called?

A

Gap junctions

11
Q

What does the contraction of muscles?

A

Myofibril