Biology 223Human Anatomy and Physiology IWeek 3; Lecture 2; WednesdayDr. Stuart S. Sumida

Appendicular Skeleton

Remember that the body is made up of many segments.

Limbs are multisegmental –derived from more than one segment, usually 6.

6 segments

6 segments

Placement of the Limbs Relative to Body Wall

• Pectoral girdle is SUPERFICIAL to the body wall.

• Pectoral limb attaches to dorsal aspect of body wall.

• Pelvic Girdle temporarily INTERRUPTS the body wall.

• Pelvic limb attaches to lateral aspect of body wall

Pectoral Girdle

Pelvic Girdle

Brachium

Antebrachium

Manus

Femur,Thigh

Crus

Pes

Female

Male

MEDIAL MENISCUS1. DEEP CAPSULE

SURFACE

2. ANTERIOR/ POSTERIOR HORNS

3. MENISCO-FEMORAL & PATELLAR FIBERS

4. SEMI-MEMBRANOSIS (DISPUTED)

5. MCL

LATERAL MENISCUS1. DEEP CAPSULE

SURFACE

2. ANTERIOR/ POSTERIOR HORNS

3. POPLITEUS TENDON

4. MENISCO-PATELLAR FIBERS

5. POSTERIOR CRUCIATE LIGAMENT

LCL

MCL

1

2

1. TIBIAL COLLATERAL LIGAMENT2. POSTERIOR CRUCIATE LIGAMENT3. ANTERIOR CRUCIATE LIGAMENT

3

The Skeleton, Nutrition, Sex, and Growth

SEX NUTRITIONGood Poor

Male Continued Growth, Reduced GrowthGreater Height Shorter than

normal height

Female Energy to Delayed onset ofReproduction & reproductive ability;Supporting Fat Continued bone

Reserves growth; TALLER