Myocardium - ✔✔specialized muscle, unique ability to contract on its own. w/out stimulation by nerves
The heart has four chambers, what are they? - ✔✔Two upper chambers receive blood are called Atria.
The left atrium receives blood from the lungs via the pulmonary vein and is oxygen-rich; the right atrium
receives blood from the peripheral curculation (THE BODY) and is oxygen-poor.
Right Ventricle of the heart - ✔✔Sends deoxygenated blood to the lungs.
Left Ventriclue of the heart - ✔✔Sends oxygenated blood into the body or peripheral curculation (THE
BODY)
Vessels and Valves - ✔✔blood flows through the body in only one direction. The right side of the heart is
filled with deoxygenated blood while the left side is filled with oxygenated blood.
Neurons - ✔✔cells of the nervous system responsible for conducting nerve impulses within the brain as
well as from one part of the body to another.
Action potential - ✔✔The nerves threshold of stimulus
Synapse - ✔✔A junction between two neurons or to another structure such as a muscle.
Terminal Button - ✔✔the bulge at the end of the nerve touches the next nerve in the nerve pathway.
Gap between two nerves - ✔✔synaptic cleft
Central Nervous System - ✔✔overall control center of the body and consists of the brain and spinal cord.
Cerebral Cortex - ✔✔Responsible for such essential functions as thought, learning, memory,
consciousness, the feeling of sensations such as pain or heat and the initiation of muscle movement.
, The Core of the Brain - ✔✔Impulses pass through on their way to or from the cerebral cortex. Relay
station between sensory inputs from the periphery of the body to the cerebral cortex.
Cerebellum - ✔✔Coordinating center for both sensory receptors, such as those for vision and hearing as
well as coordination of movement.
Brainstem consists of what? - ✔✔Midbrain, pons, and medulla oblongata
Cranial nerves - ✔✔peripheral nerves that have their origin at the base of the brain.
Optic Nerve - ✔✔2nd cranial nerve, allows us to see
Olfactory Nerve - ✔✔1st cranial nerve and allows us to smell
Auditory Nerve - ✔✔8th cranial nerve, allows us to hear
Trigeminal Nerve - ✔✔5th cranial nerve, supplies sensation to the teeth and jaws, also has motor
brances that supply the muscle of mastication.
Facial Nerve - ✔✔7th cranial nerve, supplies motor fibers to the muscles of facial expression and allows
us to smiles, frown, wrinkle our brow.
What trigeminal nerves "three paired" division consist of? - ✔✔Opthalmic, Maxillary and Mandibular
Autonomic Nervous System regulates what? - ✔✔Internal Organs, keeping the bodys internal
environment in a relatively constant state (homeostasis)