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julsineya [31]
2 years ago
7

What protects the brain?

Biology
2 answers:
swat322 years ago
4 0

Answer: D

Explanatoin: The brain is housed inside the bony covering called the cranium. The cranium protects the brain from injury. Together, the cranium and bones that protect the face are called the skull. Between the skull and brain is the meninges, which consist of three layers of tissue that cover and protect the brain and spinal cord.

Setler [38]2 years ago
3 0

Tha answer would be D (the skull)ㅤㅤㅤㅤ

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Supportive connective tissue—bone and cartilage—provide structure and strength to the body and protect soft tissues. A few distinct cell types and densely packed fibers in a matrix characterize these tissues. In bone, the matrix is rigid and described as calcified because of the deposited calcium salts.

Explanation:

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Power stroke (myosin head bends) coupled with the release of ADP and phosphate

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The attached image shows the cross-bridge muscle contraction cycle, which is activated  by Ca2+ sticking to the actin active site. And how actin moves in relation to myosin.

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