Muscular Sytem Flashcards Preview

Dental Boards Review > Muscular Sytem > Flashcards

Flashcards in Muscular Sytem Deck (187)
Loading flashcards...
1

It is the functional unit of a muscle

muscle Fiber

2

Contractions of muscles depends on

Myofilaments

3

T/F: All types of muscles have unlimited capacity of regeneration.

False - Limited

4

functions of muscular system

Movement
Maintenance of posture
Stabilize the joint
Generation of heat

5

Least function of muscular sytem

Generation of heat

6

Types of Muscles

Skeletal
Smooth
Cardiac

7

How many skeletal muscles in the human body?

650 skeletal muscles

8

Muscle that has the fastest muscle contraction activity.

Skeletal muscle

9

Skeletal muscle characteristics

Voluntary
Striated
Incapable of mitosis

10

What does striations in the muscle means?

Arrangement of myofilaments in the microscope.

11

Types of Skeletal fibers

Fast (white) fiber
Slow (Red) fiber

12

Large muscle fiber that relies on GLYCOGEN to become ATP

Fast Fiber (white)

13

Small muscle fiber that relies on MYOGLOBIN

Slow fiber (red)

14

White fibers has _____ blood supply
Red fibers has _____ blood supply

less
more

15

What is Myoglobin?

protein that caries oxygen to muscles

16

What is oxidatove phosphorylation?

Mitochondria uses oxygen to produce ATP

17

What cell organelle responsible for ATP production?

Mitochondria

18

It is the contractual unit of skeletal muscle.

Sarcomere

19

Where can you find sarcomere?

Myofilament

20

What are the two myofilaments?

Action and Myosin

21

What structure in the sarcomere that attached the myosin to Z-line?

Titin

22

What is needed in order for the myosin head to contract ?

ATP to ADP

23

ATP formula upon reaching in the myosin head for it to be used in contraction

ADP + Phosphate

24

What is needed in order for Acton to contact?

Calcium

25

Responsible for bridging effect

Myosin

26

Where does calcium comes from ?

Sarcoplasmic reticulum

27

What structure does calcium binds in order for the ACTIN in SKELETAL and CARDIAC muscles to contact?

TROPONIN C

28

What structure does calcium binds in order for the ACTIN in SMOOTH muscles to contact?

Calmodulin

29

I BAND contains what filaments?

Thin filaments

30

A-band contains what filaments?

Thick and thin