Muscles and Muscle Tissue

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created 6 years ago by shadysmainlady
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Chapter 9
updated 6 years ago by shadysmainlady
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1

list the types of muscle tissues

skeletal, cardiac and smooth

2

what are muscles cells also called and why?

muscle fibers - because of their length

3

what is the plasma membrane of a muscle cell called?

sarcolemma

4

what is the cytoplasm in a muscle cell called?

sarcoplasm

5

which muscles fibers are the longest of the 3 types?

skeletal muscles fibers

6

list 5 characteristics of skeletal muscle tissue

striated, voluntary control, contracts rapidly while tiring easily, responsible for body mobility, exerts adaptable force

7

skeletal muscles are composed of ______ and attach to _____

skeletal muscle tissue/the bony skeleton

8

what are the 4 special characteristics of muscle tissue?

excitability, contractility, extensibility and elasticity

9

what are the 4 important body functions that muscle performs?

produces movement, maintains body posture, stabilizes joints and generates heat

10

when describing muscle, what does "striated" mean?

striped

11

Harry is pondering an exam question that asks, "Which muscle type has elongated cells and is found in the walls of the urinary bladder?" How should he respond?

smooth muscle

12

the three connective tissue wrappings are:

epimysium, perimysium and endomysium

13

define epimysium

an overcoat of dense regular CT that surrounds the entire muscle

14

define perimysium

fibrous CT that surrounds groups of fascicles

15

define endomysium

fine sheath of CT composed of reticular fibers surrounding each muscle fiber

16

each skeletal muscle fiber is supplied with _______ that controls contraction

a nerve fiber

17

how is waste removed from skeletal muscle tissue?

via blood moving through the veins

18

how does the delivery of oxygen affect skeletal muscle? and how does it get there?

contracting fibers require a continuous delivery of oxygen and nutrients. it arrives via blood

19

list 3 functions of muscle CT

moves bones by contractions that pull on the various layers of CT, contributes to the elasticity of muscle tissue and provides entry and exit to blood vessels and nerve fibers

20

define direct (fleshy) attachments

the epimysium of the muscle is fused to the periosteum of the bone or perichondrium of a cartilage

21

define indirect attachments

CT wrappings extend beyond the muscle as a tendon or aponeurosis