Q1) Soon after a sugary meal, ______ cells in the pancreatic islets (islets of Langerhans) secrete...

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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)Â 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)Â 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

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Ans 1 Soon after a sugary mealbeta cells in the pancreatic islets islets of Langerhans secrete insulin which helpsto lower the blood sugar Ans 2 The ttubules conduct electrical impulses that stimulate calcium release from the sarcoplasmic reticulum Sarcotubular system is a system of membranous structures in the form of vesicles and tubules in the sarco plasm of the muscle fiber Sarcotubular system is formed mainly by two types of structures 1 T tubules 2 L tubules Ttubules or transverse tubules are narrow tubules formed See Answer

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