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Flashcards in Ch.2 Deck (101)
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1

3 components of carcass

Muscle
Bone
Fat

2

Skeletal muscle is how much of carcass weight

35-65%

3

What kind of muscle has a striated banding pattern

Skeletal muscle
Transverse banding pattern

4

Blood vessels and intestines
Involuntary

Smooth muscle

5

Striated
Involuntary

Cardiac muscle

6

What muscle is attached directly or indirectly to bones by ligaments, fascia, cartilage, skin

Skeletal muscle

7

Skeletal muscle specialized for:

Shapes, sizes, and characteristics based on functions

8

Connective tissue sheath

Epimysium

9

Extends into the interior of the muscle

Perimysium

10

Nerve fibers and blood vessels enter and exit muscle through what connective tissues

Epimysium and perimysium

11

Muscle fiber=myofiber=muscle cell

Make up 79-92% total muscle

12

Remaking muscle volume

Connective tissue
Blood vessels
Nerve fibers
Extra cellular fluid (outside muscle)

13

Mammalian and again muscle fibers

Long
Threadlike
Multinucleated
Unbranched
Taper on each end

14

Cell membrane surrounding a muscle fiber

Sarcolemma

15

Sarcolema is composed of

Protein and lipid
Bilayer phospholipid cell membrane
Cholesterol

16

Elastic and can endure great distortion during contraction, relaxation, and stretching

Sarcolema

17

Invaginations of the sarcolemma

Transverse tubules

18

Myoneural junction

Termination of motor nerve fiber endings on sarcolemma

19

Motor end plate

Small raised mound on the muscle formed by structures on the myoneural junction junction

20

Special to muscles
Cytoplasm of muscle cells
Contains organelles and inclusions
Made mostly of water

Sarcoplasm

21

Multinucleated
# of nuclei related to fiber length
Nuclei higher in the vicinity of motor end plate and tendinous attachment

Skeletal muscle fibers

22

Mammalian myofibers

Nuclei beneath sarcolemma

23

Ellipsodial shape and long axis parallel to fiber

Nuclei

24

Organelle unique to muscle tissue
Long thin rods
Long axis parallel to muscle fiber
Extend length of muscle
Bathed in sarcoplasm

Myofibril

25

Two filaments in myofibrils

Thick and thin myofilaments

26

Thick myofilament

Myosin

27

Thin myofilaments

F-actin

28

Thick filament surrounded by how many thin filaments

6

29

Singly refractive when viewed with polarized light
Isotropic

I-band

30

Double refractive
Anisotropic
Dense

A-band