Senses

Cornea - the transparent layer in front of the eye that refracts light into the eye

Lens - a clear disk at the front of the eye that refracts and focuses light rays

Iris - coloured tissue at the front of the eye that controls the amount of light entering the eye

Sclera - white layer of the eye that protects and supports eyeball

Retina - layers of nerve tissue at the back of the eye that contains sensory receptors for sight

Pupil - the round opening in the centre of the iris that allows light to enter the eye

Ciliary body - a part of the middle layer of the eye that holds lens in place

Aqueous body - a transparent water-like fluid that helps the eye maintain shape and absorbs shock

Vitreous body - the part of the eye between the lens and the retina that helps maintain shape, delivers nutrients to parts of the eye

Choroid - a thin layer of tissue in the middle layer of the eye that absorbs excess light

Optic nerve - a nerve at the back of the eye that transmits impulses to the brain

Optic disc - the round spot on the retina which is a point of exist for nerve cells which then becomes the blind spot

Cone - a cell in the retina that detects colour

Rod - a cell in the retina that detects light

Monocular vision - animals, usually prey, that have side facing eyes

Binocular vision - animals, usually predators, that have front facing eyes

Outer ear - for gathering sound

Middle ear - transmits vibrations to the inner ear

Inner ear - receives sound waves and transmits them to the brain

Pinna - the visible part of the ear

Ear canal - a tube running from the outer ear to the middle ear

Ear drum - aids in hearing and protects the middle ear

Malleus - known as the hammer, contacts the eardrum

Incus - known as the anvil, transmits vibrations from the malleus to the stapes

Stapes - known as the stirrup, contacts sound vibrations to the inner ear

Auditory tube - channel between the middle ear and the throat

Temporal bone - bone that forms parts of the side of the skull

Semicircular canals - three tubes in the inner ear which are responsible for your sense of balance

Cochlea - a coiled tube in the inner ear through which sound waves trigger nerve impulses

Gustation - sense of taste

Taste buds - organ used to detect taste

Dorsal - toward the back

Epiglottis - covers the windpipe while swallowing

Soft palate - used to aid speech, swallowing, and breathing

Mucous membrane - prevents dehydration, stops dirt from entering the body

Pappillae - helps grip food while chewing, contains taste buds

Olfaction - sense of smell

Nasal cavity - hollow space behind the nose

Upper cartilage - supports the side of the nose

Lower cartilage - helps shape the nostrils and tip of the nose

Incisors - teeth at the front of the mouth used for biting

Canines - teeth in front of the premolars that rip and tear food

Molars - back teeth that grind food

Premolars - the teeth behind the canines, used for chewing and grinding food

Crown - visible part of the tooth

Neck - region where the crown and root meet

Root - part of the tooth below the gum line

Enamel - hard, outermost layer of a tooth

Dentine - bone surrounding the pulp cavity of a tooth

Pulp - soft tissue within a tooth, containing nerves and blood vessels

Gum - also known as gingiva, provides barrier against bacteria

Bone - where gums attach to the jaw

Periodontal membrane - membrane surrounding a tooth

Cementum - material covering the tooth root

Root canal - the pulp-filled cavity in the root of a tooth

Epidermis - outer layer of skin

Dermis - middle layer of skin

Hypodermis - the layer of skin beneath the dermis, which serves as a storage repository for fat

Subcutaneous tissue - fatty tissue found beneath the dermis

Muscle - tissue composed of fibres that can contract

Sweat glands - the glands that secrete sweat, located in the dermal layer of the skin

Hair - made of keratin, protects scalp from light from sun

Oil glands - release oil that keeps hair flexible and waterproofs the epidermis

Blood vessels - tubelike structures that carry blood throughout the body

Hair follicles - tubelike pockets of epidermal cells that extend into the dermis

Keratin - a fibre protein which is the main component of hair, skin, and nails