The bones of an adult skull suture are joined by dense collagen strands with no cavity between them. Which structural class contains that joint?

At the pubic symphysis, the two hip bones meet through a thick pad of resilient connective tissue rather than an open cavity. Which structural class is this?

The knee has a capsule around the bone ends and a space containing slippery lubricating fluid. Which structural class is it?

At the distal tibiofibular joint, the lower ends of the tibia and fibula are joined just above the ankle. Which structural class is this joint?

An epiphyseal plate joins bone regions with hyaline tissue during growth and lacks a joint cavity. Which structural class does it represent?

The shoulder joint links the head of the humerus to the socket of the scapula. Which structural class contains it?

The first rib joins the sternum at the first sternocostal joint. Which structural class is this joint?

A suture in the adult skull permits no movement between the bones it joins. Which functional class fits it?

The pubic symphysis allows limited give during walking but is not freely movable. Which functional class is it?

The elbow bends and straightens through a wide range during arm movement. Which functional class is it?

A gomphosis anchors a tooth in its socket in the jaw. Which functional class describes it?

The distal tibiofibular joint is a syndesmosis between the lower ends of the tibia and fibula. Which functional class fits it?

The shoulder joins the rounded head of the humerus to a shallow socket on the scapula. Which functional class describes it?

The elbow lets the forearm bend and straighten mainly in one plane. Which synovial type is this?

The atlas and axis let the head rotate side to side around a vertical axis. Which synovial type is the atlantoaxial articulation?

The shoulder permits flexion, extension, abduction, adduction, rotation, and circumduction. Which synovial type is it?

Intercarpal articulations allow nearly flat bone surfaces to glide past each other. Which synovial type are they?

The wrist between the radius and carpals permits flexion, extension, abduction, and adduction, but little rotation. Which type is it?

The thumb carpometacarpal joint permits motion in two planes plus opposition across the palm. Which synovial type is it?

The knee mainly permits flexion and extension, with slight rotation when flexed. Which synovial type is it usually classified as?

The proximal radioulnar articulation lets the radius turn over the ulna during pronation and supination. Which synovial type is it?

Metacarpophalangeal joints let fingers flex, extend, abduct, and adduct without axial rotation. Which synovial type are they?

What does the fluid within a freely movable joint capsule do for the opposing bone surfaces?

What is the main job of articular cartilage on the ends of bones in a synovial joint?

What does the synovial membrane do along the inner wall of a joint capsule?

What role does the tough outer layer of a joint capsule play?

What does a ligament associated with a synovial joint do?

What does a meniscus in the knee do inside the capsule?

What is the joint cavity's role in a synovial articulation?

What does the fibrocartilage labrum around the shoulder socket do?