Physiology > QUESTIONS & ANSWERS > SLU Human Physiology Exam 3 (All)

SLU Human Physiology Exam 3

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SLU Human Physiology Exam 3 What does the Thalamus do? - ANS - Acts like the post office, sends neurons to the right place Reflexes for somatics are in the - ANS - Spinal cord Reflexes for autonomics are in the - ANS - Brain stem How are neuron tracks structured? - ANS - They are bundled The spinal thalamic tract goes where? - ANS - Through the spine to the thalamus Where does all movement start? - ANS - Primary motor cortex What do autonomic neurons control? - ANS - Heart rate, contractility, and breathing What does the frontal lobe do? - ANS - Voluntary control of skeletal muscles, personality, talking & intellectual processes What does the parietal lobe do? - ANS - Controls muscular sensations, understands speech, and formulates words to express thoughts and emotions What does the temporal lobe do? - ANS - Interprets auditory sensations, stores auditory and visual experiences What does the occipital lobe do? - ANS - Correlates visual images with previous visual experiences What does the insula lobe do? - ANS - Controls memory & sensory (pain) and visceral integration What does the midbrain do? - ANS - Acts as the relay station between the cerebrum and the spinal cord or cerebellum What do autonomic reflexes do? - ANS - They are the reflex centers for the visual system What do auditory reflexes do? - ANS - They are the centers for the auditory system Dopamine releasing nerves arise in - ANS - The ventral tegmental area & the substantial nigra What is the function of the Pneumotaxic area? - ANS - Prevents food from entering the trachea by causing you to hold your breath while swallowing What does the vasomotor center do? - ANS - controls blood vessel diameter What does the cardiac control center do? - ANS - Controls heart rate What is the function of the Rhythmicity area? - ANS - Helps control breathing What does the reticular activating system do? - ANS - Controls sleep regulation What do clock proteins do? - ANS - Makes the repressor protein and releases cortisol What regulates Circardian rhythms? - ANS - Light Tonic receptors are - ANS - Slow adaptating Phasic receptors are - ANS - fast adapting If the heart speeds up, what Beta is present? - ANS - Beta 1 If the heart contracts, what Beta is present? - ANS - Beta 1 Where are Beta 2s located? - ANS - Skeletal muscles and liver True or false: When the Beta 2s are in the same location as Alpha 1s, B2s over take the A1s reaction - ANS - True Tetinus - ANS - When all myosin is connected to What is motor unit recruitment? - ANS - Adding more motors units to complete a task Where does calcium come from? - ANS - sarcoplasmic reticulum, in voltage gated calcium channels What is ATP used for? - ANS - Cross bridging and relaxation What do cardiac muscles contain? - ANS - Troponin, tropomyosin, t-tubes, sarcomeres, striated muscle, ATP What does Beta 1 do to the heart - ANS - Increases heart rate & contraction What is the SA node? - ANS - pacemaker of the heart To get relaxation you have to - ANS - Remove calcium and phosphate

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