Lesson 30 Lecture Notes Flashcards
A neuron has how many parts?
Dendrites (hairlike extensions), Soma (cell body), Axon (tail), Axon terminals (puts out neurotransmitters)
The myelin sheath is made of
glial cells
Sensory neurons detect
sensory stimuli
How many kinds of neurons are there?
Sensory, interneurons, motor neurons
What is the function of the corpus Callosum?
allows the two hemispheres to communicate
What is the order of the parts of the brain?
Cerebral cortex, grey matter, white matter
Frontal lobes are for
reasoning, planning, movement, emotion, problem solving
parietal lobes are for
sense of touch
Temporal lobes are for
speech, memory, hearing
occipital lobes are for
sight, sometimes called the visual cortex
Cerebellum is responsible for
skeletal muscle activity
the brain stem controls
involuntary functions
what are the parts of the brain stem?
medulla oblongata, pons, midbrain
What is the limbic system?
thalamus, hypothalamus, hippocampus, and amygdala
What protects the brain from foreign substances?
the blood brain barrier
where is the reflex arc based out of?
the spinal cord
motor nerves are divided into
sematic nerves and automictic nerves
Somatic receptors are linked to
skin
special senses include
balance, sight, hearing, taste, smell
how many kinds of receptors are there?
thermoreceptors, mechanoreceptors, and pain receptors
smell is due to
chemoreceptors
what are the five tastes?
salty, sweet, sour, savory, bitter,
Balance is in
the inner ear- fluid or crystals moving around
in what order do sound waves hit the parts of the ear
ear canal, tympanic membrane, malleus, incus, stapes, cochlea
where does light go in the eye?
cornea, pupils, lens, retina
which part of the eye sends nerve impulses to to the brain?
the retina
Endocrine system communicates
with chemical signals
Hypothalamus
area that secretes hormones that manage the pituitary gland
How many lobes does the pituitary gland have
two; anterior and posterior
serotonin and melatonin affect
sleep and wake cycle
What is type 1 diabetes?
pancreas does not produce enough insulin. Must be treated with insulin shots
What is type 2 diabetes?
body doesn’t react correctly to insulin, can be treated with diet and exercise
