Daance: Module 1 Complete Set Questions With Verified Answers

Daance: Module 1 Complete Set Questions With Verified Answers Myocardium - ANSWER specialized muscle, unique ability to contract on its own. w/out stimulation by nerves The heart has four chambers, what are they? - ANSWER 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 - ANSWER Sends deoxygenated blood to the lungs. Left Ventriclue of the heart - ANSWER Sends oxygenated blood into the body or peripheral curculation (THE BODY) Vessels and Valves - ANSWER 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 - ANSWER 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 - ANSWER The nerves threshold of stimulus Synapse - ANSWER A junction between two neurons or to another structure such as a muscle. Terminal Button - ANSWER the bulge at the end of the nerve touches the next nerve in the nerve pathway. Gap between two nerves - ANSWER synaptic cleft Central Nervous System - ANSWER overall control center of the body and consists of the brain and spinal cord. Cerebral Cortex - ANSWER 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 - ANSWER 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 - ANSWER Coordinating center for both sensory receptors, such as those for vision and hearing as well as coordination of movement. Brainstem consists of what? - ANSWER Midbrain, pons, and medulla oblongata Cranial nerves - ANSWER peripheral nerves that have their origin at the base of the brain. Optic Nerve - ANSWER 2nd cranial nerve, allows us to see Olfactory Nerve - ANSWER 1st cranial nerve and allows us to smell Auditory Nerve - ANSWER 8th cranial nerve, allows us to hear Trigeminal Nerve - ANSWER 5th cranial nerve, supplies sensation to the teeth and jaws, also has motor brances that supply the muscle of mastication. Facial Nerve - ANSWER 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? - ANSWER Opthalmic, Maxillary and Mandibular Autonomic Nervous System regulates what? - ANSWER Internal Organs, keeping the bodys internal environment in a relatively constant state (homeostasis) Sympathetic System - ANSWER More dynamic and tends to speed up processes in their effects on the various organs (Physical activity in response to stress) "Fight or Flight" summarizes the various actions of this system. Parasympathetic System - ANSWER Maintains the resting or vegetative state and tends to slow processes on various organs. "Couch potato states