Balance and posture

Question 1

What is balance?

Answer 1

The centre of mass over the base of support

Question 2

What is posture?

Answer 2

The orientation of the body segments relative to gravity sector

Question 3

What is the Vestibular System

Answer 3

Found in the inner ear
Senses the movement of the body to approximately 1 Deg.
Controls balance and posture by Otoliths (saccule and utricle) and the 3 Semi-circular canals (horizontal, posterior and anterior)

Question 4

Where is the Vestibular System based?

Answer 4

In the ear (labyrinth)

Question 5

What is the role of the otoliths?

Answer 5

the otoliths (saccule and utricle) detect acceleration

Question 6

what is the role of the semi-circular canals?

Answer 6

Detect the head movement/rotation within the fluid of the inner ear due to its 3 dimensional nature

Question 7

What must the Semi-circular canals be perpendicular to?

Answer 7

The axis (transverse, forntal and saggital)

Question 8

What are the sub systems and what are they concerned with?

Answer 8

Visual
Auditory
Somatosensory- touch, pain, heat
Gustatory- taste
Olfactory- smell
Vestibular-balance