L06: Properties Of The Motor Unit

Question 1

What does the motor system work to do

Answer 1

Set muscle tone

Bring about voluntary movement

Question 2

What is the minimal functional unit of a motor system

Answer 2

Motor unit

Question 3

What exactly is a motor unit

Answer 3

Somatic efferent and the muscle fibres

Question 4

What is a motor unit compromised of

Answer 4

One alpha motoneurone
All extrafusal muscle fibres it supplies
Neuromuscular junction

Question 5

What are the 4 general classes of tissues in the body

Answer 5

Epithelial
Connective tissue
Muscles
Nervous system

Question 6

What is a single cell fo a skeletal muscle known as

Answer 6

Myocytes

Question 7

What are the layers of skeletal muscles from superficial to deep

Answer 7

Epimysium
Perimysium
Endomysium

Question 8

What is an endomysium

Answer 8

Tissue that envelopes myocyte

Question 9

What is the perimysium

Answer 9

Tissue that envelopes fasicle

Question 10

What is a fasicle

Answer 10

Myocytes collected in fascicles

Question 11

What is a epimysium

Answer 11

Tissue that enveloped all the fascicles and neurovascular bundles of the muscle

Question 12

What is a tendon

Answer 12

Fibrous connective tissue that joins muscle to bone

Question 13

What are the classifications of skeletal muscles

Answer 13

Circular 
Convergent 
Multi pennate
Fusiform 
Bipennate 
Unipennate
Parallel

Question 14

What are myocytes made from

Answer 14

Myofibrils

Question 15

What is the motor neurone split into

Answer 15

Upper motoneurone

Lower motoneurone

Question 16

What does a myofibril have

Answer 16

A band 
I band 
H zone 
M line 
Z disc

Question 17

What are Lower motonuerones known as

Answer 17

Alpha motoneurone

Question 18

What are the classes of myofibrils

Answer 18

Fast twitch
Intermediate twitch
Slow twitch

Question 19

What determines the type of muscle fibre

Answer 19

The nerve connecting to it