Multiple-answer questions 5 points each ons.or more answers. may be correct. Che

Question

Multiple-answer questions 5 points each ons.or more answers. may be correct. Check all the correct answers. Question 1 - Which of the following structures implicated in the electrical conduction pathway of the heart executes a delay before transmitting a received signa atrioventricular node bundle of His Purkinje fibers sinoatrial node Question 2- When the plasma oncotic pressure in a capillary exceeds the hydrostatic pressure in the capillary, what is the direction of fluid (water) movement? from the capillary into the interstitial space (tissue) these pressures have no effect on the direction of fluid movement O from the interstitial space (tissue) into the capillary hydraulic resistance in that section to... ? increase O remain the same D decrease Question 4- Which of the following is true about compliance of the lungs? The compliance (AV/AP relationship) of the lungs is linear The compliance of the lungs filled with air is the same as their compliance when filled with saline Recoil of the lungs after inspiration is due-y, to the elastic tissue of the lung and-A due to surface tension forces Hysteresis in the compliance curve is due to the influence of surface tension Question 6- Which of the following are ways to alter the force produced by an excised skeletal muscle? changing the muscle's length changing the frequency of stimulation increasing the number of neurons that innervate a particular motor unit ? changing the intensity of stimulation

Explanation / Answer

Question 1. atrioventricular node

Question 2. from the interstitial space to the capillary

Question 3. increase

Question 4. Recoil of the lungs after inspiration is due 1/3 to the elastic tissue of the lung and 2/3 due to surface tension forces, hysteresis in the complience curve is due to influence of surface tension.

Question 6. Changing the muscle's length, changing the intensity of stimulation.

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