Ch.4
(Neural Transmission)
(Neural Transmission)
Ions
What lobe of the brain assists directly with vision from the eye?
The occipital lobe.
Pain that results from abnormal processing of pain signals in the nervous system.
What is neuropathic pain?
Neurons primarily communicate with other cells across synapses using chemical messengers known as Neurotransmitters.
What is true?
What is something we know will impact your vision?
Sun Exposure
Which monoamine neurotransmitter is most strongly associated with regulating mood, sleep, appetite/digestion, and sexual behavior?
What is Serotonin?
What structure within the eye creates the eye color?
The Iris.
What system detects and processes taste sensations and send signals to the brain.
Action potentials follow an all or nothing response rule.
True
How does light enter the human eye?
Through the cornea, then the pupil, and focused by the lens.
What is Polarized
What will happen to the pupil when illumination is low?
The pupil will dilate?
Which type of sensory area of the cortex receives the majority of the input from the thalamic relay nuclei of the system?
What is the primary sensory cortex?
A postsynaptic protentional occurs when the membrane potential at the axon hillock reaches threshold due to sufficient depolarization.
False, What is Action Protentional?
The refractory period is important because it:
Prevents the neuron from firing in the opposite direction
What is one of the rules that Na+ K- Pump will follow?
Follow the area of low concentration
3 Na+ will exit for every 2 K- to enter
Negative internal charges creates pressure for the Na+ and K+
What structure of the eye is capable of mediating high acuity vision?
The Fovea
What is a repeated exposure to a stimuli that can lead to less sensitivity?
What is Habituation?
We would expect lions to have vertical pupils.
True, predators.
How many layer of cells are within the retina?
What is 5?
When a neurotransmitter causes a neuron to become hyperpolarized, what happens to the membrane potential?
It becomes more negative than the resting potential (e.g., –70 mV to –72 mV).
What is the first layer of cells within the retina, where light falls?
The Retinal Ganglion Cells.
What is the function of the proprioceptive system within the somatosensory system?
To allow the body to sense its position and movement in space.
Rods are concentrated in the fovea and are primarily responsible for color vision.
What is False?
What will my professor no longer accept after midterms.
What is late work?