Lecture 12

Question 1

What are the three types of Muscle, and what do they depend on?

Answer 1

Skeletal striated
Cardiac Striated
Smooth

Question 2

What are the characteristics of Skeletal muscle, as an Organ?

Answer 2

Composed of Bundles of Fibres

Whole muscle surrounded by connective tissues, which has the purpose of partitioning bundles (to prevent expansion). This also helps transfer loads to tendon

Question 3

What are the 3 types of of connective tissue in skeletal muscle?

Answer 3

Epimyseum (“Upon” Muscle) _surrounds the outside

Perimyseum (peri=surrounding) - inside

Endomyseum - also inside

Question 4

What does Satorius, Brevis and pollix mean in terms of muscle naming

Answer 4

Satorius = quirky
Brevis = short
Pollix = thumb

Question 5

What are the two forms of skeletal muscle?

Answer 5

Parallel - ‘length proportional to range of movement’

Oblique- ‘power proportional to mass’
(greatest in muscle with several central tendons toward which the muscle fibers converge like the barbs of feathers.- multipennate

Question 6

Muscles located in compartments usually have a common nerve supply. What are the compartments separated by

Answer 6

Fascia (inter-muscular septa)

Question 7

What protection is there for muscles that are susceptible to friction?

Answer 7

Fibrous Tendon Sheaths & Synovial sheaths

Question 8

What does the Retinaculum do?

Answer 8

Hold tendons in place and prevent bow-stringing (loose tension)

Can create compartments, that nerves and vessels can pass through

Question 9

Types of Contraction are?

Answer 9

Concentric - Shortening contraction
Isometric - Remain the same length
Eccentric - Lengthening contraction

Question 10

The Prime mover is…?

Answer 10

Responsible for a particular action

Question 11

Antagonists act to…

Answer 11

Oppose the action of the Prime Mover. If antagonists lack flexibility it may limit movement or become tight