Chapter 3: Movement

Question 1

State the function of Flexors muscles

Answer 1

Muscles that tighten/flex/shortening of the muscle

Question 2

State the function of Extensors muscles

Answer 2

Muscles that loosen/straighten/lengthen

Question 3

State the function of Agonists

Answer 3

Muscles that promote movement

Question 4

State the functions of Antagonists

Answer 4

Muscles that oppose movement

Question 5

What is each muscle fibre is controlled by in either the brain or the spinal cord?

Answer 5

Alpha motor neurone

Question 6

A motor neurone and all the muscle fibres form a…

Answer 6

Motor unit

Question 7

Receptors in the muscle called ________ send information to the spinal cord and brain about the stimulus. Signals activate alpha motor neurones for muscles to extend or flex.

Answer 7

spindles

Question 8

The motor cortex in the _______ lobe is for voluntary movement.

Answer 8

frontal

Question 9

Explain the significance of the basal ganglia in voluntary movement

Answer 9

1. Inhibits unwanted movements
2. Stabilises desired movements

Question 10

Parkinson’s disease is characterized by a lack of ________, which is the primary neurotransmitter between neurons in the _____ _______.

Answer 10

dopamine, basal ganglia