Which of the Following Is an Example of a Physical

question 58

Multiple Choice

Which of the following is an example of a physical barrier, which is an innate defense mechanism?

• A) secretions of sebaceous glands
• B) fixed macrophages
• C) perforins
• D) cytokines
• E) histamine and heparin

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Definitions:

Cartilaginous Joints

Joints where the bones are attached via cartilage, allowing for limited movement.

Joint Capsule

A fibrous sac that encloses a joint, containing synovial fluid which lubricates the joint to reduce friction.

Double Layer

A double layer refers to two parallel layers of different substances, often seen in biological membranes or in materials science.

Periosteum

A thick layer of blood vessel-filled connective tissue that surrounds bones, excluding the joint surfaces.