Question

In: Biology

Match the following: Acetylcholine in smooth muscle     Acetylcholine in skeletal muscle Acetylcholine in pancreas Acetylcholine in...

Match the following:

  1. Acetylcholine in smooth muscle    
  2. Acetylcholine in skeletal muscle
  3. Acetylcholine in pancreas
  4. Acetylcholine in cardiac muscle

a. Functions via G protein and phospholipase C

b. Opening of chemically gated Na+ channels

c. Functions via G protein, opens up K+ channels

d. Functions via G protein, activates protein kinase G

e. Functions via calcium and activates Protein kinase C

Group of answer choices

42. Acetylcholine in smooth muscle

      [ Choose ]            B. Opening of chemically gated Na+ channels            c. Functions via G protein, opens up K+ channels            d. Functions via G protein, activates protein kinase G            a. Functions via G protein and phospholipase C      

43. Acetylcholine in skeletal muscle

      [ Choose ]            B. Opening of chemically gated Na+ channels            c. Functions via G protein, opens up K+ channels            d. Functions via G protein, activates protein kinase G            a. Functions via G protein and phospholipase C      

44. Acetylcholine in pancreas

      [ Choose ]            B. Opening of chemically gated Na+ channels            c. Functions via G protein, opens up K+ channels            d. Functions via G protein, activates protein kinase G            a. Functions via G protein and phospholipase C      

45. Acetylcholine in cardiac muscle

      [ Choose ]            B. Opening of chemically gated Na+ channels            c. Functions via G protein, opens up K+ channels            d. Functions via G protein, activates protein kinase G            a. Functions via G protein and phospholipase C      

Solutions

Expert Solution

•Acetylcholine in smooth muscle activates the Muscarinic acetylcholine receptors M2 and M3 and it will promote contraction. Once the Muscarinic receptor is activated, the stored calcium will be released and increasing the opening of calcium activated potassium channels. Functions via calcium and activates Protein kinase C

•Acetylcholine in skeletal muscle will bind to the acetylcholine receptor, leading to the opening of sodium channels. Opening of chemically gated Na+ channels

•Acetylcholine in pancreas will bind to the muscarinic acetylcholine receptor M3 located at the surface of beta cells. Once the acetylcholine binds the heterotrimeric G protein will activates the phospholipase C. Functions via G protein and phospholipase C      

•Acetylcholine in cardiac muscle will also bind to the muscarinic receptors but in this case the potassium channels will open. Functions via G protein, opens up K+ channels

gladiator answered 2 years ago
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