Question

identify which of the following would be functionally synarthrotic. select all that apply.
epiphysial plate
acetabulofemoral (hip)
intervertebral
humeroulnar/humeroradial (elbow)
cranial sutures
interosseous membrane
radiocarpal (wrist)
pubic symphysis
gomphosis (tooth in socket)
glenohumeral (shoulder)
patellofemoral/tibiofemoral (knee)

Explanation:

A synarthrotic joint is an immovable joint.

• The epiphysial plate (growth plate) fuses as a person matures and becomes immovable, so it is synarthrotic.
• Cranial sutures are fibrous joints between the bones of the skull that are immovable (synarthrotic).
• Gomphosis (tooth in socket) is a fibrous joint that is immovable (synarthrotic).

Other joints like acetabulofemoral (hip - a multiaxial ball and socket synovial joint, diarthrotic - freely movable), intervertebral (amphiarthrotic - slightly movable), humeroulnar/humeroradial (elbow - hinge synovial joint, diarthrotic), interosseous membrane (amphiarthrotic in some cases, allowing slight movement), radiocarpal (wrist - condyloid synovial joint, diarthrotic), pubic symphysis (amphiarthrotic - slightly movable), glenohumeral (shoulder - ball and socket synovial joint, diarthrotic), patellofemoral/tibiofemoral (knee - synovial joint, diarthrotic) are not synarthrotic.

Answer:

Epiphysial plate, Cranial Sutures, Gomphosis (Tooth in socket)