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timama [110]
3 years ago
10

In skeletal muscle Catt is essential for the contraction process. For skeletal

Biology
1 answer:
zaharov [31]3 years ago
4 0

Answer:

The source of Calcium (Ca⁺⁺) for the skeletal muscle cells is the sarcoplasmic reticulum, the main store of intracellular Ca⁺⁺.

Explanation:

Calcium (Ca⁺⁺) is an ion that plays an important role in muscle contraction, a process that requires high cytoplasmic concentrations of this ion to promote myofibrillary activity.

The sarcoplasmic reticulum (SR) -equivalent to the endoplasmic smooth reticulum- is an organelle that regulates the contractile activity of skeletal muscle. The two terminal cisterns of the SR attach to the T-tube, forming a triad, which surrounds the myofibrilla.

Once the muscle cell receives the signal to contract, the Ca⁺⁺ channels are opened and allow Ca⁺⁺ to enter the cell, promoting the exit of this cation from the SR and increased its cytoplasmic levels. This stimulates muscle contraction.

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mart [117]
The answer u r looking for is- A, all of the above. Hope I’ve helped ;)
5 0
3 years ago
What is NOT a function of the endocrine system? Select one: a. Production of white blood cells b. Influencing fluid absorption c
MakcuM [25]

Answer:

Option a. Production of white blood cells

Explanation:

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7 0
3 years ago
Saturated fats have long straight tails of fatty acids, while unsaturated fats from vegetables have kinks in their tails due to
Ipatiy [6.2K]

Answer:

Saturated fats/ solid fats

Explanation:

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Trans - fatty acids as well are also unsaturated oils which are hydrogenated industrially to give saturated fatty acids which are called artificial tran-fats. They are found in most commonly found in baked and fried goods.

4 0
3 years ago
What process forms a metamorphic rock
belka [17]

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6 0
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Describe what happens as a lake becomes a forest?
ipn [44]

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