Anat Muscle Contract Vocab Flashcards Preview

11th grade > Anat Muscle Contract Vocab > Flashcards

Flashcards in Anat Muscle Contract Vocab Deck (17):
1

Sarcolemma

Cell membrane

2

T-tubules

Membranous channel that extends inward from cell membrane

3

Sarcoplasm

Cytoplasm in muscle fiber

4

Sarcoplasmic reticulum

Membranous network of changes and tubules within a muscle fiber

5

Myoglobin

Pigmented compound in muscle tissue that stores oxygen

6

Myofibril

Contractile fibers within muscle cell

7

Sacromere

Structural and functional unit of a Myofibril

8

Myosin

Protein with actin

9

Actin

Thin

10

Myosin binding site

Myosin head binds to actin

11

Tropomyosin

Block muscle contraction until calcium ion are present, prevent myosin and actin from touching, long line

12

Troponin

Functions same as Tropomyosin

13

Neuromuscular junction

Synapse btw motor neuron n skeletal muscle fiber

14

Origin

the attachment site that doesn't move during contraction

15

Insertion

the attachment site that does move when the muscle contracts.

16

Power stroke

involves the return of the myosin head to its low-energy conformation. The powerstroke generates force, pulling the thin filament toward the center of the sarcomere.

17

Muscle fiber

Muscle cell