1. 7
The Skeleton: Part C

2. STUDENTS WILL DO THE FOLLOWING SLIDES ON THEIR OWN
MW Class
Slides To Do Prior To Wednesday of This Week: 4, 6 (A-1 and 2 only), 27, and 28
WF Class
Do These Slides Prior To Friday of This Week: 4, 6 (A-1 and 2 only), 8, 11, 12, 14, 15, 27, and 28

3. Skeletal System Divisions
Appendicular
Axial

4. PART 2 Appendicular Skeleton I. INTRODUCTION
= Limbs
Pectoral girdle:
Pelvic girdle:

5. Costoclavicular Ligament Caracoclavicular Ligament
Pectoral Girdle
Acromio-
clavicular
joint
Clavicle
Costoclavicular Ligament
Caracoclavicular Ligament
Scapula
(a)
Articulated pectoral girdle
Figure 7.24a

6. II. Pectoral Girdle A. Introduction 1. Bones 2. Functions Attach:
muscles
3. Glenohumeral Joint = Shoulder Joint:
Type of joint
Shallow Socket
mobility
Strength
PLAY
A&P Flix™: Bones of the pectoral girdle

7. Right clavicle, superior view
Sternal (medial)
end
Posterior
Anterior
Acromial (lateral)
end
(b)
Right clavicle, superior view
Figure 7.24b

8. B. Clavicles (Collarbones)
Function:
Parts
Acromial (lateral) end:
Sternal (medial) end:
Superior View

9. C. Scapulae Acromion Suprascapular notch Superior border Coracoid
process
Superior
angle
Glenoid
cavity
Subscapular
fossa
Lateral border
Medial border
Inferior angle
(a) Right scapula, anterior aspect
Figure 7.25a

10. (b) Right scapula, posterior aspect
Coracoid process
Suprascapular notch
Superior
angle
Acromion
Supraspinous
fossa
Glenoid
cavity
at lateral
angle
Spine
Infraspinous
fossa
Medial border
Lateral border
(b) Right scapula, posterior aspect
Figure 7.25b

11. C. Scapulae Held in Place: Location: between ribs 2 and 7
Anterior
Held in Place:
Location: between ribs 2 and 7
Shape: 3 borders & 2 angles
Superior Border
Vertebral Border
Axillary Border
Superior Angle
Inferior Angle
Parts
Glenoid Cavity– Glenohumeral Joint
Supraglenoid & Infraglenoid tubercles
Posterior

12. Spine Fossae General Functions: Subscapular Fossa Supraspinous Fossa
Scapula Parts …
Anterior
Spine
Fossae
General Functions:
Subscapular Fossa
Supraspinous Fossa
Infraspinous Fossa
Lateral
Spine
Posterior

13. (c) Right scapula, lateral aspect Inferior angle
Supraspinous fossa
Supraglenoid
tubercle
Acromion
Coracoid
process
Glenoid
cavity
Spine
Supraspinous
fossa
Infraspinous
fossa
Infraglenoid
tubercle
Infraspinous
fossa
Subscapular
fossa
Subscapular
fossa
Posterior
Anterior
(c) Right scapula, lateral aspect
Inferior angle
Figure 7.25c

14. Caracoclavicular Ligament
Scapula parts …
Coracoid Process–
Suprasapular Notch–
Acromion Process
Acromioclavicular Joint
Ligaments
Acromioclavicular- weak
Caracoclavicular-
Anterior
Posterior
Caracoclavicular Ligament
Acromioclavicuar
joint
Clavicle
Scapula

15. III The Upper Limb A. Introduction 30 bones Most movable joint
Arm = Humerus
Most movable joint
Forearm = Radius and ulna
Hand: Carpals, Metacarpals, and Phalanx bones = 27

16. B. HUMERUS Head: Condyles: 1. Parts– Articulations Capitulum Trochlea
Anatomical Neck:
Surgical Neck:

17. Greater & Lesser Tubercle–
Humerus Parts …
Greater & Lesser Tubercle–
Intertubercular Sulcus (Groove)– furrow
Passage of Biceps Brachii tendon
Deltoid tuberosity
Radial Groove

18. Condyles For Elbow Joint Capitulum Trochlea Medial Epicondyle (large)
Anterior
Condyles For Elbow Joint
Capitulum
Trochlea
Medial Epicondyle (large)
Lateral Epicondyle (small)
Medial Supracondylar Ridge
Lateral Supracondylar Ridge
Posterior

19. Olecranon Fossa – Posterior Coronoid Fossa Radial Fossa Anterior
Humerus Parts …
Posterior
Olecranon Fossa –
Coronoid Fossa
Radial Fossa
Anterior

21. Greater Head of tubercle humerus Lesser Anatomical tubercle neck
Inter-
tubercular
sulcus
Deltoid
tuberosity
Lateral
supracondylar
ridge
Coronoid
fossa
Radial
fossa
Medial
epicondyle
Capitulum
Trochlea
(a) Anterior view
Figure 7.26a

22. C. Bones of the Forearm Radius Ulna Radial notch of the ulna Olecranon
process
Trochlear
notch
Head
Head of
radius
Neck
Coronoid
process
Radial
tuberosity
Neck of
radius
Proximal
radioulnar
joint
Interosseous
membrane
Ulna
Radius
Ulnar notch
of the radius
Radius
Head of ulna
Styloid
process of ulna
Styloid
process
of radius
Distal radioulnar
joint
Styloid process
of radius
(a) Anterior view
(b) Posterior view
Figure 7.27a-b

23. The following parts articulate with humerus to form the Elbow Joint
1. ULNA
The following parts articulate with humerus to form the Elbow Joint
Olecranon Process– Elbow;
Trochlear Notch–
Coronoid Process– “
Posterior
Posterior
Anterior
Anterior

24. Ulna … Anterior Radial Notch– Proximal Radioulnar Joint
Head– at distal end
Styloid Process

25. 2. Radius Anterior rotates over Ulna
Head (proximal end) articulates with:
Radial Tuberosity
Interosseous membrane
Ulnar Notch
Distal Radioulnar Joint
Styloid Process
Anterior
Ulnar Notch

26. ARM & FOREARM BONE ARTICULATIONS
Carrying Angle:
Humerus
Coronoid
fossa
Capitulum
Medial
epicondyle
Head of
radius
Trochlea
Coronoid
process of
ulna
Radial
tuberosity
Radius
Radial notch
Ulna
(c) Anterior view at the elbow region
Humerus
Olecranon
fossa
Olecranon
process
Lateral
epicondyle
Medial
epicondyle
Head
Ulna
Neck
Radius
(d) Posterior view of extended elbow
Figure 7.26c-d

27. D. Hand: Carpus Carpals: forms a carpal tunnel
- Flexor Retinaculum:
forms a carpal tunnel
Proximal row– left to right, Anatomical Position
Scaphoid, lunate, triquetrum, and pisiform (located on the triquetrum anteriorly)
Sally Left The Party (So Long To Pinky)
Distal row– left to right
Trapezium, trapezoid, capitate, and hamate
To Take Cindy Home (Here Comes The Thumb)
(Is backwards)

28. Radiocarpal Joint, Wrist Joint =
1. Carpals …
Radiocarpal Joint, Wrist Joint =
2. Metacarpus– metacarpal bones
#1(thumb) to #5
3. Phalanges = bones of fingers
1 digit = phalanges—
distal, middle, and proximal
Fingers= 1(Pollex)
Pollex: no middle phalanx

29. (a) Anterior view of left hand (b) Posterior view of left hand
Phalanges
• Distal
• Middle
• Proximal
Metacarpals
• Head
• Shaft
Sesamoid
bones
• Base
Carpals
Carpals
Carpals
• Trapezium
• Hamate
• Trapezium
• Trapezoid
• Capitate
• Trapezoid
• Scaphoid
• Pisiform
• Scaphoid
• Triquetrum
Radius
• Lunate
Ulna
Radius
(a) Anterior view of left hand
(b) Posterior view of left hand
Figure 7.28a-b

30. END

31. (c) Proximal portion of ulna, lateral view
Olecranon process
View
Trochlear notch
Coronoid process
Radial notch
(c) Proximal portion of ulna,
lateral view
Ulnar notch of radius
Articulation
for lunate
Articulation
for scaphoid
Styloid
process
Head
of ulna
Styloid
process
View
(d) Distal ends of the radius and
ulna at the wrist
Figure 7.27c-d

32. BONE MARKINGS