exam 7 Flashcards
how would we increase tension in a smooth muscle
inactivated myosin light chain phosphatase and close dense bodies
how is the increase of intracellular calcium in smooth muscle caused
by the opening of voltage gated, ligand gated, and mechanically gated channels
While at the gym performing deadlifts, you bend over to lift a heavy barbell that is resting on the ground. As you decrease the weight of that barbell what will happen
it will take less time to initially move the barbell and less time to move it all the way up
Gaining even more physiology knowledge, Julie is reading her physiology textbook by holding it in front of her on her upturned right hand. A friend decides she looks tired and sets a large coffee on top of the open text causing Julie’s arm to move closer to the ground. But, she quickly recovers and raises the book-coffee combination back up and then closer to her face so she can smell the rich aroma. Starting with the addition of the coffee, Julie’s bicep did what series of contractions
eccentric- isometric- isotonic
what is the number of different metabolic processes a myofiber has to generate ATP via substrate level phosphorylation
3
during the knee jerk reflex the extensor muscle is ____ and the flexor muscle is ____
extensor- stimulated
flexor- no longer stimulated
Gaining even more physiology knowledge, Julie is reading her physiology textbook by holding it in front of her on her upturned right hand. A friend decides she looks tired and sets a large coffee on top of the open text causing Julie’s arm to move closer to the ground. But, she quickly recovers and raises the book-coffee combination back up and then closer to her face so she can smell the rich aroma. Starting with the addition of the coffee, Julie’s bicep did the series of contraction
just know!!
What will lead to smooth muscle relaxation
increase in myosin light chain phosphatase
how is a myofiber characterized
speed of contraction, amount of ATPase activity, and its mechanism for synthesizing ATP
One of your TAs is a high school track coach. During the season, she works with her two-mile runners to develop their ______ muscles and her 100-meter sprinters to develop their _____ muscles.
slow oxidative (low ATPase) ---- fast glycolytic (High ATPase)
During the off season, a sprinter decides to train for a marathon. After completing the training and marathon, he finds that he is not able to sprint as well. Correct statements about what changes occurred in his leg muscles are that
the proportion of red myofibers increased—
his crossbridge cycling rate decreased—-
his tension generation decreased —
his number of mitochondria increased
Correct characteristics of a muscle with a long endurance capacity are what
it contains all 3 types of myofibers, its latency period and response time are both very long. and it contains lots of myoglobin and vascularization
Carmen decides to participate in an arm-wrestling contest. Her initial contest finds her first neither gaining nor losing ground against her opponent, second losing ground to her opponent, then third moving her opponent’s arm for the win. The correct order of contracts for these three time points are what
isometric, eccentric, isotonic
A battle with “pink eye” causes you to awaken in the morning with your eyes crusted shut. You successfully reached for your phone and dialed your doctor (not using voice commands). You were able to accomplish this feat because of what
your proprioception system, stretch receptors, and Golgi tendon organs
Since Shelby, the silly old dog, is also a little chubby, she sometimes has trouble jumping up onto the couch. It takes her a little longer than it previously did to actually jump. This means that she is what
experiencing a larger load, a longer latent period, and a longer isometric contraction
