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Chapter 7 Lecture. Chapter 7. The Skeletal System: Appendicular Division. Frederic Martini Michael Timmons Robert Tallitsch. Introduction. The appendicular skeleton is involved in changing your position in the external environment. Standing Walking Sitting Dressing Driving a car.

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Chapter 7

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chapter 7

Chapter 7 Lecture

Chapter 7

The Skeletal System: Appendicular Division

Frederic Martini

Michael Timmons

Robert Tallitsch

  • The appendicular skeleton is involved in changing your position in the external environment.
    • Standing
    • Walking
    • Sitting
    • Dressing
    • Driving a car

Figure 7.1 The Appendicular Skeleton

the pectoral girdle and the upper limb
The Pectoral Girdle and the Upper Limb
  • Includes the S-shaped clavicle (collarbone) and the flattened scapula (shoulder blade).
  • The clavicle articulates with the sternum’s manubrium; is the only direct connection between the axial skeleton and the pectoral girdle.
  • The scapula is attached to the clavicle anteriorly but has no connection to the actual axial skeleton; instead skeletal muscles and ligaments support it.

The Pectoral Girdle


the clavicle
The Clavicle

Figure 7.3 The Clavicle

the scapula
The Scapula

Figure 7.5a,b,c The Scapula

the scapula1
The Scapula

Figure 7.5d,e,f The Scapula

the upper limb
The Upper Limb
  • Consists of the:
    • Brachium (humerus)
    • Antebrachium (ulna and radius)
    • Wrist (carpals)
    • Hand (metacarpals and phalanges) 

The Upper Limb


the humerus anterior
The Humerus: Anterior

Figure 7.6a The Anterior Humerus

the humerus posterior
The Humerus: Posterior

Figure 7.6d The Posterior Humerus

the ulna and radius posterior
The Ulna and Radius: Posterior

Figure 7.7a The Posterior Forearm

the ulna and radius anterior
The Ulna and Radius: Anterior

Figure 7.7d The Anterior Forearm

the wrist and hand
The Wrist and Hand
  • The carpal bones are the eight bones of the wrist.
  • The five metacarpal bones articulate with the distal carpal bones and make up the palm of the hand.
  • The fourteen phalanges of the hand make up the finger bones.

The Wrist and Hand


the pelvic girdle and lower limb
The Pelvic Girdle and Lower Limb
  • The pelvic girdle supports and protects the lower viscera and developing fetus in females.
  • The bones of the pelvic girdle and lower limb are much more massive than their homologues of the upper limb.
  • Consists of two ossa coxae bones.
  • The lower limb includes the thigh (femur), kneecap (patella), leg, (tibia and fibula), ankle (tarsals), and foot (metatarsals and phalanges).

The Pelvic Girdle and Lower Limb


the pelvic girdle
The Pelvic Girdle

Figure 7.10a Lateral Pelvic Girdle

the pelvic girdle1
The Pelvic Girdle

Figure 7.10b Medial Pelvic Girdle

the pelvis
The Pelvis

Figure 7.11a Anterior Pelvis

Figure 7.11b Posterior Pelvis

the pelvis1
The Pelvis

Figure 7.12a Superior Pelvis

Figure 7.12c Inferior Pelvis

the pelvis male vs female
The Pelvis: Male vs. Female
  • The male and female pelvis contains numerous differences.
    • Generally the male pelvis is heavier with more prominent markings due to the larger muscles attached to it.
the pelvis male vs female1
The Pelvis: Male vs. Female
  • Characteristics of the female pelvis:
    • Enlarged pelvic outlet, due to wider ischial spines
    • Less curvature of the sacrum and coccyx
    • Wider, more circular pelvic inlet
    • Broader, lower pelvis
    • Widely fanning ilia
    • Pubic angle greater than 100°

The Pelvis


the femur anterior
The Femur: Anterior

Figure 7.14a The Anterior Femur

the femur posterior
The Femur: Posterior

Figure 7.14d The Posterior Femur

the patella
The Patella

Figure 7.15 The Patella

the tibia and fibula anterior
The Tibia and Fibula: Anterior

Figure 7.16a The Anterior Tibia and Fibula

the tibia and fibula posterior
The Tibia and Fibula: Posterior

Figure 7.16d The Posterior Tibia and Fibula

the ankle and foot
The Ankle and Foot
  • Seven tarsal bones make up the ankle.
  • The five metatarsal bones articulate with the distal tarsal bones and make up the arches of the foot.
  • The fourteen phalanges of the foot make up the toe bones.

The Ankle and Foot