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Which kind of membrane surrounds the heart?

A.

synovial membrane

B.

serous membrane

C.

cutaneous membrane

D.

mucus membrane

Answer and Explanation

The Correct Answer is B

A. synovial membrane: Synovial membranes line the cavities of freely movable joints and secrete synovial fluid for lubrication. They do not surround the heart or other internal organs.

B. serous membrane: The heart is surrounded by the pericardium, which is a serous membrane. This double-layered membrane produces serous fluid to reduce friction as the heart beats within the thoracic cavity.

C. cutaneous membrane: The cutaneous membrane refers to the skin, which covers the external surface of the body. It does not enclose internal organs like the heart.

D. mucus membrane: Mucus membranes line body cavities that open to the exterior, such as the respiratory and digestive tracts, and secrete mucus to protect and lubricate surfaces. They are not associated with the heart.


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Related Questions

Correct Answer is B

Explanation

A. stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum:This order goes from deepest to superficial. A needle would pierce the layers from superficial to deep, so this sequence is reversed.

B. stratum corneum, stratum granulosum, stratum spinosum, stratum basale:The epidermis is pierced from the outermost layer inward. The stratum corneum is the outer protective layer, followed by the stratum granulosum, stratum spinosum, and finally the stratum basale, which rests on the dermis.

C. stratum granulosum, stratum basale, stratum spinosum, stratum corneum:This order is not sequential either from superficial to deep or deep to superficial, so it does not represent the correct pathway for a needle entering the skin.

D. stratum basale, stratum spinosum, stratum granulosum, stratum corneum:This order lists the layers from deep to superficial, the opposite of how a needle would penetrate the epidermis.

Correct Answer is A

Explanation

A. transcription:Transcription is the process by which the DNA sequence of a gene is copied into messenger RNA (mRNA). This mRNA then exits the nucleus and carries the genetic code to ribosomes for protein synthesis.

B. replication:Replication is the process of copying the entire DNA molecule to produce two identical DNA strands during cell division. It does not produce mRNA and does not involve transporting genetic information out of the nucleus,

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