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BMS 1001 > Muscle > Flashcards

Flashcards in Muscle Deck (24):
1

What are the functions of the muscular system?

Movement
Maintains Posture
Stabilizes joint
Generates Heat
Controls Heart Muscle
Dilation & Constriction of circulation

2

What are muscle cells called?

Muscle Fibres

3

What is the name of the 2 proteins found in a muscle fiber?

Myocin & Actin

4

What are the preffix's for muscle?

Myo, Mys and Sarco

5

What is the name for the cell membrane in a muscle fibre?

Sarcolemma

6

What is the name change for the Cytoplasm in the muscle fiber?

Sarcoplasm

7

What is the name change for the Smooth ER in the muscle fiber?

Sarcoplasmic reticulum

8

What are the 3 types of muscle, and give an example of each?

Skeletal - biceps,
Smooth - uterus, circulatory blood vessels
Cardiac - heart

9

What is the function of skeletal muscle and what nerve pathway supplies them?

Movement and the Somatic nervous system -
Visually - Striated. Voluntary movement

10

What nerve system supplies the smooth muscle?

Parasympathetic and Sympathetic
Visually - Uni-striated. Involuntary movement

11

What nerve supply supplies Cardiac muscle?

Sympathetic and Parasympathetic
Visually Striated - Involuntary movement

12

What are the levels of organisation within a skeletal muscle?

Sarcomere - Myofibril - Muscle Fiber (cell) - Muscle Fiber bundle - Muscle

13

What is the name of the connective tissue that surrounds the whole muscle?

Epimyosium

14

What is the name of the CT that covers the Facicle (muscle fiber bundle)?

Perimysium

15

What is the name of the CT that covers the Muscle Fiber?

Endomysisum

16

What is the name of the area where the nerve axon meet the muscle fiber?

Muscle end plate.

17

What is teh name of the thin filaments?

Actin

18

What is the name of the thick filaments?

Myosin

19

What is the name given to the functional unit within a Skeletal muscle fiber?

Sarcomere

20

Why is calcium important in muscle contraction?

It binds to the troponin forcing it to change shape and the tropomyosin to move off binding sites

21

What does myosin need to move?

It need one molecule of ATP to move to bind and one molecule to release. ATP is converted to ADP and Pi

22

Where are the Ca ions kept?

In the Sarcoplasmic reticulum

23

What happens when an action potential is generated?

The AP travels do the T-Tubles opening the Sarcoplasmic reticulium allowing Ca ions into the Sarcoplasm which then bind to Troponin

24

What is the name of the nurotransmittter used by skeletal muscle?

Acetylcholine