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This is the ability to see objects, including the ability to perceive colour, brightness, depth.
sight
What is the PUPIL of the eye and how does it work?
the black circle at the centre of the iris which lets light enter the eye. It gets wider in the dark and narrower in the light
How does the AUDITORY SYSTEM work?
sound in the form of vibrations are detected by the ear and converted to nerve impulses that are perceived by the brain
What part of the ear is dedicated to hearing, it converts sounds from the outer ear to impulses that go to the brain?
cochlea
What system of the inner ear is dedicated to balance and spatial orientation?
vestibular system
What is MELANIN and what does it do?
a natural pigment - helps protect the body from the sun's radiation, it contributes to the color of the skin
Which receptors are more sensitive TASTE or SMELL?
SMELL, we can smell more than 4000 odors.
What are the three classifications of muscles?
skeletal muscles, smooth muscles, cardiac muscle
Which system controls the smooth muscles?
autonomic nervous system
Give two examples of where you can find smooth muscles.
organs like stomach, intestine muscles etc
What are the three parts of the APPENDICULAR SKELETON?
pelvic girdle, upper and lower limbs
What are the 6 types of bones that form the arm, forearm and hand?
humerus, radius, ulna, carpal bones, metacarpal bones and phalanges
What are the three parts of the AXIAL SKELETON?
skull, thoracic cage and vertebral column
What is the purpose of the THORACIC CAGE?
It protects the internal organs like the lungs and heart.
What is the purpose of the VERTEBRAL COLUMN?
It protects the spinal cord
How many bones are in the HUMAN SKELETON
206
