LO2: muscular system

Question 1

Agonist:

Answer 1

Contracts to bring about movement

Question 2

Antagonist:

Answer 2

Relaxes

Question 3

Concentric:

Answer 3

Shortens

Question 4

Eccentric:

Answer 4

Lengthens
Acts as a brake

Question 5

Fixator:

Answer 5

Muscle that Stabilises joint
Ones acting above and core for hips

Question 6

Hyperplasia:

Answer 6

Quantity of muscle fibres

Question 7

Hypertrophy:

Answer 7

Size of muscle fibres

Question 8

What is meant by structural characteristics?

Answer 8

How fibres made up
Physical things attached/part of it

Question 9

What are some structural characteristics:

Answer 9

Size of motor neuron
Mitochondrial density
Capillary density

Question 10

What’s meant by functional characteristics?

Answer 10

How a fibre works

Question 11

What are some functional characteristics:

Answer 11

Contraction time
Fatigue Resistance
Type of activity- aerobic/anaerobic
Force production
Oxidative capacity
Glycolytic capacity
Major storage fuel

Question 12

Isometric contraction:

Answer 12

Remains under tension
Neither shortens or lengthens

Question 13

what is blood pooling?

Answer 13

when valves don’t work, so the blood falls backwards

Question 14

what’s meant by short term effects?

Answer 14

during or straight after

Question 15

what’s meant by long term effects?

Answer 15

weeks / months
sustained period

Question 16

what is the fuel source for type 1 fibres?

Answer 16

triglycerides and glycogen

Question 17

what’s the fuel source for type 2a fibres?

Answer 17

glycogen and creatine phosphate

Question 18

what’s the fuel source for type 2b fibres?

Answer 18

creatine phosphate and glycogen

Question 19

what is capillary density?

Answer 19

number of capillaries per muscle

Question 20

what’s meant by a high capillary density?

Answer 20

large exchange surface area
short diffusion path
high RBC transit time