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Flashcards in skeletal muscle Deck (15)
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1
Q

all 3 muscle cells possess what 4 characteristics?

A

irritability, contractility, extensibility, elasticity

2
Q

what type of cells do all muscles have?

A

elongated- skeletal are the longest

3
Q

what are the 3 functions of muscles?

A

movement
stabilization
thermogenesis

4
Q

where are skeletal muscles located?

A

somatic/skeletal, upper esophagus, diaphragm

5
Q

describe the cells of skeletal muscles

A

multinucleated and long- fusion of numerous myoblasts

6
Q

what is the epimysium composed of?

A

dense connective tissue

7
Q

what surrounds a skeletal muscle?

A

epimysium

8
Q

the skeletal muscle is made up of bundles of?

A

muscle cells (fascicles) each covered by perimysium

9
Q

the perimysium is made up of?

A

dense connective tissue

10
Q

what is a fascicle made of?

A

numerous muscle cells/ fibers each covered by endomysium

11
Q

what does the endomysium consist of?

A

basal lamina

12
Q

where do the epimysium, perimysium and endomysium become continuous with the muscle tendon?

A

myotendinous junction- attaches muscle to bone

13
Q

what is the sarcolemma?

A

cell membrane of a muscle fiber

14
Q

what is a transverse tubule?

A

it is continuous with the sarcolemma, extending into the interior of the fiber, surrounding the myofibrils

15
Q

what is the sarcoplasmic reticulum and what does it form?

A

specialized endoplasmic reticulum, forms a tubular network around the myofibrils