Skeleton and Joints

And the cavity is filled with synovial fluid. Choice D is nonsense.

The appendicular skeleton includes the four limbs and shoulder and pectoral girdles. The metacarpals are the bones of the hands.

A tuberosity is a rough area on the surface of a bone to which a muscle’s tendon attaches.

Haemopoiesis (or haematopoiesis) refers to making all of cellular components of blood. The other (wrong) choices are, respectively, the rupturing (lysis) of RBC, blood in the urine and the process by which we cause bleeding to stop.

Without the lumbar curve directing some body mass anteriorly, the centre of gravity could not be held over the base of support (the area bounded by the feet when placed on the ground). Choice C refers to the cervical curve.

The “plate” is the hyaline cartilage between the shaft (diaphysis) and end (epiphysis) of a long bone in children and adolescents. In adults it is replaced by an ossified “epiphyseal line”.

The joints between the wrist bones (carpals) and bones of the hand (metacarpals) are synovial and freely movable joints.

Cancellous (spongy) bone does not contain osteons but does contain the little beams known as trabeculae.

The ramus of the mandible articulates with the temporal bone at the mandibular fossa. The joint is freely moveable, allowing us to chew and speak.

A trabeculum (plural trabeculae) is the internal bony structure of spongy (cancellous) bone.