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Flashcards in Exam 1 Deck (123)
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1

The sarcolemma is:

Cell membrane surrounding muscle fiber
Composed of protein and lipid material

2

The sarcoplasm:

Contains organelles and inclusions
The cytoplasm of muscle cells

3

Botulism is caused by:

Blocking acetylcholine

4

Hyaluronic acid:

Serves as lubricant in joints
Is a glycosaminoglycan

5

ATPase is an enzyme that hydrolysis

ATP

6

Cholinesterase is an enzyme that hydrolyzes

Acetylcholine

7

Intermolecular cross linkages

Lead to insolubility of collagen fibers
Increase with age
Affect meat tenderness

8

Water, protein, carbs, and lipid make up approximately what percent of live mammalian skeletal muscle

75,18.5,1,3

9

A defect in which of the following proteins causes the disease known as muscular dystrophy

Dystrophin

10

Lymph

Circulates continuously
Passes through all tissues, organs, and lymph nodes
Helps transport absorbed fatty acids

11

Double muscling genotype

Results in twice as many muscle fibers

12

Callipyge genotype

Results in hypertrophy
Means beautiful buttocks
Results in tougher meat products
Is developed in sheep

13

What is the viscous substance that serves to lubricate juxtaposed joint surfaces

Hyaluronic acid

14

Synthetic somatotropin is used to

Increase leanness

15

The two calcium channel proteins involved in regulating calcium during depolarization of the T-tubules and sarcoplasmic reticulum are

Dihydropyridine receptor and Ryanodine receptor

16

Meat contains neurons

T

17

Muscle function is based on structure

T

18

Muscle fiber is a term for muscle cell

T

19

Epimysium, perimysium, and endomysium are connective tissue proper

T

20

Collagen is the most abundant protein in the animal body

T

21

Proline is the most abundant amino acid in collagen

F

22

Mesenchymal cells are precursors of fibroblasts and adipoblasts

T

23

Collagen and elastin fibers are constructed intercellulary

F

24

Elongation of the bone occurs at the epiphyseal plate

T

25

Intermuscular fat is also known as the slow twitch muscle fibers

F

26

Red muscle fibers are known as Marcelina and is deposited between muscles

T

27

Carcass traits are lowly heritable

F

28

Supplement of beta Adrenergic agonists increases meat tenderness

F

29

Na/k pumps actively transport sodium and potassium using ATP for energy

T

30

Muscles can only contract

T