Question

what component of a synovial joint lubricates the joint, supplies nutrients and removes metabolic wastes, and absorbs shock?

synovial fluid
articular cartilage
adipose tissue
ligament

question 75
determine the functional joint classification that provides the greatest mobility.

cartilaginous
amphiarthrosis
synarthrosis
diarthrosis

Explanation:

Analyze the first question

Using the Synovial Joint Anatomy knowledge point

The question asks for the component of a synovial joint that lubricates, supplies nutrients, removes metabolic wastes, and absorbs shock.

• Synovial fluid is secreted by the synovial membrane. It fills the joint cavity, reduces friction (lubricates), circulates nutrients to and removes wastes from the avascular articular cartilage, and acts as a shock absorber.
• Articular cartilage covers the bone ends to reduce friction and absorb shock, but it does not actively circulate nutrients or remove wastes.
• Adipose tissue (articular fat pads) provides cushioning but does not perform these metabolic functions.
• Ligaments connect bone to bone and stabilize the joint.

Thus, the correct option is synovial fluid.

Analyze the second question

Using the Joint Classification knowledge point

The question asks for the functional joint classification that provides the greatest mobility.

• Synarthrosis is an immobile joint (e.g., sutures).
• Amphiarthrosis is a slightly mobile joint (e.g., pubic symphysis).
• Diarthrosis is a freely mobile joint (e.g., all synovial joints).
• Cartilaginous is a structural classification, not a functional one.

Thus, the correct option is diarthrosis.

Answer:

Question 1

• (A) synovial fluid (Correct answer)
• (B) articular cartilage
• (C) adipose tissue
• (D) ligament

Question 2

• (A) cartilaginous
• (B) amphiarthrosis
• (C) synarthrosis
• (D) diarthrosis (Correct answer)