Question

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

Explanation:

Amphiarthrotic joints allow slight movement. The epiphysial plate (during growth, allows some movement as bone lengthens), interosseous membrane (allows some movement between bones it connects), intervertebral (allows some flexion/extension etc. of spine), and pubic symphysis (allows slight movement, especially in females during childbirth) are amphiarthrotic. Cranial sutures (synarthrotic - no movement), humeroulnar/humeroradial (elbow - diarthrotic - freely movable), acetabulofemoral (hip - diarthrotic), glenohumeral (shoulder - diarthrotic), radiocarpal (wrist - diarthrotic), gomphosis (synarthrotic), patellofemoral/tibiofemoral (knee - diarthrotic) are not amphiarthrotic.

Answer:

Epiphysial plate, Interosseous membrane, Intervertebral, Pubic symphysis.