This is a summary of the 1.4C block "The Human Body". The summary consists of concise notes with colorful pictures and clear explanations. Everything from the literature is there and this summary will help you get a high grade on your exam, like I did. Good luck on your exam and remember repetition...
carries info from sensory organs like ears, eyes, nose to the brain
A = admit info
sensory + incoming nerves
Efferent neuron
E = exit info
carries info from brain to muscles
motor + outgoing nerves
1. Brain & Body 2
, 💡 Both somatic + autonomic NS have efferent & afferent neurons
Brain cells
Neuron
nerve cells that transmit messages from one part of the body to another
nucleus contains DNA
myelin sheath isolates the axon + gives white color
presynaptic terminals (buttons): here the signal is passed to the dendrites of
other neurons or other cells
1. Brain & Body 3
, Types of neurons
motor ➡️ efferent
sensory ➡️ afferent
interneurons ➡️ connects one neuron to another, there is no or short axons
and no myelin sheaths
Classification of neurons
unipolar: one extension
bipolar: 2 extensions
multipolar: 2 or more extensions
Glial cells
work to support neurons
surround neurons
Brain
forebrain
telencephalon (endbrain)
diencephalon (interbrain)
1. Brain & Body 4
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