Ears & Mouth
Snail shape structure that has tiny hairs to transmit sound
Cochlea
The colored portion of the eye
Iris
The part of the brain that regulates automatic functions like breathing and heart rate
Brain Stem
These are sensitive to chemical changes like taste buds or smell
Chemoreceptors
This includes the brain and spinal cord
Central nervous system
The waxy substance secreted in by the ear
Cerumen
The structure that is used for light vision
Cones
The largest part of the brain that interprets your five senses and is divided into two hemispheres
Cerebrum
These react to physical interaction like pressure, touch, and itching
Mechanoreceptors
This carries impulses between the CNS and PNC (cranial and spinal nerves)
Somatic nervous system
The human nose can detect more than _____ many smells.
6,000!
The white part of the eye.
Sclera
The part of the brain that maintains your balance, posture, coordination, and fine motor skills
Cerebellum
These are sensitive to light changes
Photoreceptors
This system prepares the body for “fight or flight”
Sympathetic Nervous System
The structures on the tongue that contain taste buds.
Papillae
The structure used for dim vision
Rods
Special chemicals located at the end of each axon and allows the impulse to travel from one neuron to another..
Neurotransmitters
These respond to temperature fluctuation
Thermoreceptors
This counteracts the actions of the sympathetic nervous system
Parasympathetic nervous system
The name for the eardrum
Tympanic Membrane
The gland that produces tears
Lacrimal Gland
1. The part of a neuron that carries impulses away from the cell body
2. The covering that increases the rate of transmission of an impulse
1. Axon
2. Myelin Sheath
These detect pain
Nociceptors
What is the difference between Afferent and Efferent Nerves??
Afferent (sensory) nerves carry messages from all parts of the body to the brain and spinal cord
Efferent (motor) nerves carry messages from the brain and spinal cord to the muscles and glands