Neurons
What are the three main parts of a neuron?
cell body, dendrites and axon
What is the purpose of the myelin sheath covering the axon?
It insulates the axon
What do photoreceptors sense?
light
What does the occipital lobe do?
processes visual information
What type of receptor is for both smell and taste?
chemoreceptors
This part of the neuron contains the nucleus and organelles
cell body
What type of signal moves along the axon within a neuron?
An electrical signal
What do thermoreceptors in the skin monitor?
Temperature
What is the white matter mostly made out of?
axons insulated by myelin sheath
What travels in waves that our ears are designed to collect?
sound waves
These branch-like extensions receive impulses or messages from neighboring cells.
dendrites
These chemical messengers are released by vesicles into the synaptic cleft to stimulate the next cell
neurotransmitters
What is the difference between rod cells and cone cells in the eye?
rod cells detect black and white vision, cone cells detect color
what is grey matter mostly made out of?
dendrites
What are the names of the three small bones in the middle ear that amplify sound vibrations?
The malleus, the incus, and the stapes.
What is the LONGEST part in a neuron?
The Axon
The difference in charge across a neuron's membrane
resting potential
Which part of the eye does about three-quarters of the focusing?
cornea
What does the somatic nervous system control?
voluntary muscular systems
What are the three main structures of the brain?
The cerebrum, the cerebellum, and the brainstem
This is the specific point or space where neurons communicate with each other
synapse
This ion is found in higher concentrations on the outside of a resting cell membrane.
Sodium (Na+) ions
Where are taste buds located?
In bumps on the tongue called papillae ( or roof of the mouth)
What is the job of the frontal lobe?
It controls personality, reasoning, planning, judgment, voluntary movement, and speech production.
Which ion is found in higher amounts inside a resting cell?
potassium (K+) ions