Skeletal Muscle, Tissue & Fibres

Question 1

Define Homeostasis

Answer 1

Equilibrium of Body Systems Continually Adjusting to Internal and External Conditions.

Question 2

How is Homeostasis Regulated

Answer 2

Negative and Positive Feedback Loops Receptor - Effector to Reverse a Change - Hot to Cold Sweating

Question 3

3 Types of Muscle in Humans

Answer 3

Cardiac
Skeletal
Smooth Visceral

Question 4

5 Functions of Skeletal Muscle BATSS

Answer 4

B Blood Circulation
A Assist Movement
T Thermogenesis
S Stabilise Body Position
S Storing Glycogen

Question 5

4 Characteristics of Skeletal Muscle Fibres 3EC

Answer 5

E Electrical Excitability
E Extensibility
E Elasticity
C Contractility shorten

Question 6

4 Skeletal Muscle Contractions IICE

Answer 6

I Isometric - Increased Tension.
Same Muscle Fibre Length
I Isotonic - Same Tension, Fibre
Length Changes
C Concentric - Muscle Length
Shortens
E Eccentric - Muscle Length
Increases

Question 7

Skeletal Muscle Length Tension Relationship - Describe

Answer 7

1 All muscles have a resting length
2

Question 8

Name 3 Skeletal Muscle Layers

Answer 8

Epi Pen End
Epimysium Whole Muscle
Perimysium
Endomysium Fibre Fascicle Bundle

Question 9

What is a Fascicle or Fasciculus

Answer 9

A Bundle of Fibres Bound by Endomysium

Question 10

Describe the Features of a Sarcomere 3

Answer 10

Sarco Flesh
M Line H Zone
1 Smallest Contractile Unit of a Muscle
2 Two Z Discs Within a Myofibril
3 A Band Thick Myosin Filaments
4 I Band Thin Actin Filaments