Question

Discuss the importance of the appendicular skeleton in blood formation. Discuss three articulations in the human body. Talk about their classifications. Discuss two specific muscles of the Axial Skeleton. Detail their attachment, insertion, je adjacent ligaments if any.

Answer 1

1. Appendicular skeleton is the part of vertebrate skeletal system that is created by the bones that support the appendages. The skeletal support system including the limbs, pelvic girdle and pectoral girdle lies under this appendicular system. This system also contains the critical components of hematopoietic system that is seen to have role of producing blood. These function occur in red marrow and the appendicular skeleton and its bones helps in covering and securing red marrow that helps in blood formation.

2. A joint or articulation is defined as the connection that is present between the bones in the body that makes it mobile and functioning. articulation are constructed to allow and enable the body parts to have different degree of movement and functioning. The articulation system of human body is classified into following classes-

Clinical or numerical classification

Mono-articular (concerning one articulation)

Oligoarticular ( 2 or 4 joints)

Polyarticular (multiple joints)

Structural classification

Fibrous

Cartilaginous

Synovial

facet

Functional or movement based classification

Synarthrosis (allow little mobility)

Amphiaarthrosis (allows slight movement)

Synovial joint (freely movable)

Biomedical classification

Simple joint, Compound joint and complex joint

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