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Flashcards in musculskeletal system Deck (35):
1

What is the tough membrane that surrounds the whole muscle belly

Epimysium

2

What are fasciculi

Bundle of muscle fibres

3

What is the membrane that surrounds the individual muscle fibers

Endomysium

4

What are the smallest units of muscle fibres

Myofibril

5

What are the compartments within myofibril called

Sarcomeres

6

In sliding filament theory what is the thin filament and whit is the thick filament

Actin is thin filament and Myosin is thick filament

7

How does sliding filament theory make muscles contract

Myosin has a hook like head which binds with actin and rotates pulling the actin towards centre of sarcomere hence contracting muscle

8

Why is ATP useful in sliding filament theory

It binds with myosin head to give it power

9

Why is calcium important in muscle contraction

The myosin head binding sites are blocked when in a relaxed state and calcium is used to remove blocking molecule

10

What are the 4 stages of sliding filament theory

Cooking phase, Binding phase, power stroke, resetting

11

How does performing endurance exercises effect type 1 muscle fibres

improved efficiency, work capacity, increased mitochondria, hypertrophy

12

How does endurance exercises effect type 2b muscle fibres

Increased aerobic enzyme levels, increased phosphocreatine stores, hypertrophy

13

What are DOMS

Delayed Onset Muscle Soreness

14

What is the frontal plane

Divides body into anterior and posterior

15

What is the sagittal plane

Divides body into right and left

16

What is the transverse plane

Divides body into upper and lower

17

What is the medial lateral axis

Passes through sagittal plane

18

What is the anterior posterior axis

Passes through the frontal plane

19

What is the longitudinal axis

Passes through the transverse plane

20

What type of joint is the knee joint

Synovial hinge joint

21

What are the 4 heads of the quadriceps

Vastus medialise, Vastus Lateralis, Vastus intermidies, rectus femoris

22

What are the 3 heads of the hamstrings

Biceps femoris, semimembranosus, semitendinosus

23

What muscles provide the movement of the shoulder joint

Pectoralis major, deltoids, latissimus dormi

24

Name the 4 deep muscles of the shoulder

Teres minor, supaspinatus, infraspinatus, subscapularis

25

What does the teres minor help with

adduction and external rotation of shoulder

26

What does supraspinatus help with

Shoulder abduction

27

What foes the infraspinatus help with

Horizontal extension, external rotation, adduction

28

What does the subscapularis help with

internal rotation and adduction

29

What bones is the shoulder girdle made up of

Scapula and Clavicicals

30

What are the 4 posterior muscles of the shoulder girdle

Trapezius, rhomboid major, rhomboid minor, levitator scapulae

31

What are the anterior muscles of the shoulder girdle

Serratus anterior and pectoralis minor

32

What joint is more mobile and which is more stable, shoulder or hip

Hip is more sable but less mobile

33

What are the muscles of the vertebral column

Rectus Abdominis, erector spinae, internal and external obliques

34

What are Multifidus

Links small sections of vertebrae together

35

What is the quadratus lumborum

Helps laterally flex and extend the spine and also helps tilt pelvis