Q1) Soon after a sugary meal, ______ cells in the pancreaticislets (islets of Langerhans) secrete ____.
- Alpha; insulin
- Alpha; glucagon
- Beta; insulin
- Beta; glucagon
- None of these.
Q2)
what is the physiological significance of the skeletal musclefiber triad relationship?
- The t-tubules conduct electrical impulses that stimulatecalcium release from the sarcoplasmic reticulum.
- The t-tubules bring calcium to the sarcoplasmic reticulum.
- The terminal cisternae subdivide the sarcolemma.
- The sarcoplasmic reticulum transfer calcium to thet-tubules.
- None of these
Q3)Ă‚Â Ă‚Â Which of these happens fourth in an adrenergicsynaptic transmission?
- ATP is converted to cyclic AMP
- Adenylate cyclase is activated
- G protein dissociates from the NE receptor
- G protein binds to adenylate cyclase
- Cyclic AMP induces several effects in the cell
Q4)Ă‚Â Ă‚Â ____ is the only sense in which signals can reachthe cerebral cortex through second order sensory neurons.
- Equilibrium
- Vision
- Touch
- Smell
- Taste
- None of these
Q5) During the muscle contraction ______.
- The A-bands get smaller
- The H zone becomes more obvious
- The Z-discs get pulled away from the A bands
- The I-bands get smaller
- None of these
