" Brain "
Bipedal method of moving by using two feet. Its different than other animals, like the horse, spiders, and things with wings.
Humans are consistently bipedal.
Look at the human skeletons. What do you see? S-curved spin gives support
Upright position. What does this mean? Standing on two feet and up-straight. Frees hands to perform other skills.
Human Foot structure heel is rounded, arch is curved at mid-foot, or flat feet that causes some problems, shorter toes than a primate.
BRAIN: Humans have a thinking brain.
Not the largest, but it functions are : reasoning, controls abstract thinking, - surpasses all other living organisms.
Cerebrum has two distinct parts, or sides, left and right hemispheres. Individually controlled in reference to certain behaviors: sensory and movement left side of body controlled by right hemisphere of brain, of the cerebrum. So the right side of the body is controlled the left hemisphere of the cerebrum.
Left hemisphere controls language and speech, mathematical and other analytical abilities.
Right hemisphere responsible for visual and spatial processing
Epilepsy human condition that causes seizures, fibers of corpus callosum are surgically severed, separating the two hemispheres. Reduces severity of seizures.
Cerebellum structure at the back of the brain, which in certain views looks like a clamshell, controls posture and balance.
Motor cortex controls the movements of the body.
Sensory cortex lets you feel sensations from your body.
Corpus callosum bundle of nerves that allows communication between the brain hemispheres.
Neurons nerve cells, brain contains 1 trillion cells with trillions of potential associations.
Dendrites branch extensions that act like antennae to receive incoming messages
Axons at the other end of a dendrite is an extension which sends outgoing messages.
Nervous system an organized network of interconnected neurons that extends throughout the brain and body that provides a link between the outside world and the inner world of the body.
Stimulus - incoming information that causes the body to respond.
Neurotransmitters chemicals that are released by electrical impulses. They act as messengers that transmit the signal across the gap between neurons.
Synapse is the gap between neurons.
Reflex a simple and quick response to a stimulus
Reflex arc a pathway that neurons travel after responding to a stimulus.
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