DAANCE Module 1- Basic Sciences exam questions and answers

DAANCE Module 1- Basic Sciences neurons do what - ANSWER conduct nerve impulses what is the synapse - ANSWER junction between two neurons what makes up the central nervous system - ANSWER brain and spinal cord what three parts make up the brain - ANSWER cerebrum, cerebellum, medulla oblongata what makes up the peripheral nervous system - ANSWER sensory nerves and motor nerves How many cranial nerves are there - ANSWER 12 what nerve is the trigeminal nerve - ANSWER 5 what parts does the trigeminal nerve control - ANSWER supplies sensation to the teeth and jaw what are the 2 components of the autonomic nervous system? - ANSWER sympathetic nervous system parasympathetic nervous system what nervous system "speeds things up" - ANSWER sympathetic what nervous system "slows things down" - ANSWER parasympathetic what nervous system has terminations in all level of the heart - ANSWER sympathetic nervous system stimulation of the sympathetic nervous system causes what? - ANSWER vasoconstriction in general and increases the heart rate what nervous system is important in maintaining blood pressure - ANSWER sympathetic vasomotor is controlled by the - ANSWER sympathetic nervous system the vasomotor does what - ANSWER controls the diameter of the blood vessels baroreceptors regulate what function - ANSWER blood pressure with positional changes the sympathetic or adrenergic effects of the autonomic nervous system involve what - ANSWER two effects A and B- these effect several tissues and organs Alpha effect is what (only one alpha) - ANSWER vasoconstriction Beta effect is what( two beta categories) - ANSWER seen in bigger organs, heart and lungs Beta 1 activity is where - ANSWER heart related functions- such as increased heart rate and strength of contraction Beta 2 activity is where - ANSWER pulmonary function of bronchiolar dilation (lungs) Parasympathetic stimulation causes what - ANSWER increased activity of digestive tract and stimulates production of saliva and pharyngeal secretions. (atropine or Robinul can counteract stimulations) Automaticity - ANSWER heart pumps on its own Heart has four chamber- what are they - ANSWER left atrium, right atrium, left ventricle, right ventricle Where does the left atrium receive blood from - ANSWER from the lungs, via the pulmonary vein- oxygen rich blood Where does the right atrium receive blood from - ANSWER from the peripheral (body's) circulation and is oxygen poor the ventricles receive blood from where - ANSWER the atria Ventricle anatomy - ANSWER thicker walls larger chambers left ventricle is the thickest m. Where does the right ventricle send blood - ANSWER deoxygenated blood to the lungs Where does the left ventricle send blood - ANSWER oxygenated blood to the body/ peripheral circulation What are the three sources the right atrium receives blood - ANSWER above: superior vena cava below: inferior vena cava inside the heart m.: coronary sinus the blood in veins are considered what - ANSWER oxygen poor blood vessels leading AWAY from the heart are - ANSWER arteries blood vessels leading TO the heart are - ANSWER veins Flow of Blood through the heart - ANSWER 1. right atrium fills with blood 2. contracts- tricuspid valve 3. right ventricle fills with blood 4. contracts- closes tricuspid valve/opens pulmonary valve 5. blood goes through pulmonary artery to the lungs 6. pulmonary veins return