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HBS Chapter 2 Review

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by

Michelle Karumi

on 26 March 2015

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Transcript of HBS Chapter 2 Review

Describe directional pathways and types of neurons involved. How are electrical impulses created in the human body?
They have to be excited by stimuli such as light, sound, heat, pressure, or chemicals released by other neurons.
how are electrical signals created and transmitted in the human body?
Through CNS and PNS.
How do scientists determine which areas of the brain are associated with specific actions actions, emotions of functions?
MRIs & electrodes directly
implanted into the brain can show
which areas of the brain are active
during which activities or even when
people are thinking about various
things.
what is a hormone?
chemical substances that act like messenger molecules in the body
HBS Chapter 2 Review
how do neurons convey information using both electrical and chemical signals?
what factors impact our ability to react to a stimulus?
Things that directly influences the activity of a living organism or one of its parts such as exciting a sensory organ or evoking muscular contraction.
What are the main regions of the brain and the functions relating to each region?
frontal lobe
- motor function,problem solving,spontaneity, memory,language, initiation,judgement, impulse control,and social and sexual behavior.
parietal lobe
- processing sensory information regarding the location of parts of the body as well as interpreting visual information and processing language and mathematics.
temporal lobe
- primary auditory perception, such as hearing,and holds the primary auditory cortex.
occipital lobe
- visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex.
what is the basic structure and function of the neuron?
A neurone is a nerve cell and its function is to transmit electrical impulses
how to hormones interact with target cells?
Target cells have no specific receptors for a particular hormone. Those receptors bind hormones to target cells.
how do feedback loops help regulate the action of hormones?
extensively to regulate secretion of hormones in the hypothalamic pituitary axis.
Explain how the body decreases blood glucose levels if they are to high? too low?
how is light focused by the eye?
the lens
how do the eye and brain work together to process what we see?
the detects what you see but the brian tells you what youre looking at.
how does the eye perceive depth, color and optical illusions?
By the color, darkness, brightness, shape, etc., the brain can tell you whether it is 3D, moving, standing, etc.
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