For each of the following structures, tell: 1) which of the three phases of musc
ID: 3524375 • Letter: F
Question
For each of the following structures, tell:
1) which of the three phases of muscle action (or the other common action, ATP production) the structure helps complete
2) what specific functional ability this particular structure enhances
3)which of the common human muscle types bear the feature
Structures: gap junctions, Na leak channels, cyclical Na,K-ATPase pumps, discrete synapses, motor units, varicosities that broadcast NT, chem-gated Ca channels, timed Ca channels, SR and t-tubules, myosin kinase and phosphorylase, sarcomeres, glycogen, creatine phosphate, myoglobin, mitochondria, sarcomeres
Explanation / Answer
Structure
A. Gap junctions - Its helps in "latent period"
It helps in travel of electrical signals or depolarising current rapidly between mucle cells.
Present in the cardiac muscle and smooth muscle
B. Mitochondria - The structure helps in "Period of Contraction"
It's a powerhouse of the cell . In muscle cell it is responsible for providing a lot of energy in the form of ATP.
These structure are present in Cardiac , Smooth , skeletal muscles .
C.Myoglobin - The structure helps in the "Period of Contraction"
The structure act as local oxygen reservoir when the blood oxygen is insufficient during intese muscle workout.
The structure is present in exclusive ly in cadiac muscle and skeletal muscles.
D. Glycogen - This structure helps to complete the "Period of muscle contaction".
Its a form of Carbohydrate stored in the body . It serves as an immediate source of glucose to the muscle during exercise .
Skeleton mucles bears the structure .
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