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by DR RAI M. AMMAR
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Bones of Trunk (Human Anatomy)
by DR RAI M. AMMAR
www.facebook.com/drraiammar
www.twitter.com/drraiammar
www.instagram.com/drraiammar
www.linkedin.com/in/drraiammar
www.themedicall.com/blog/auther/drraiammar/
For Any Book or Notes Visit Our Website:
www.allmedicaldata.wordpress.com
www.drraiammar.blogspot.com
YOUTUBE CHANNEL :
https://www.youtube.com/channel/UCu-oR9V3OdFNTJW5yqXWXxA
ANY QUESTION ??
Get in touch with us at Any of the Above Social Media or Email at
drraiammar@gmail.com
allmedicaldata@gmail.com
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1. School of Health and Medical Sciences
State University of Zanzibar
2020
SKELETAL SYSTEM:
Bones of the Appendicular
Skeleton
HUMAN ANATOMY
2. Learning Objectives
By the end of this session, students should be able
to:
•Explain divisions of Skeleton of the Upper Limb.
•Mention regions of Skeleton of the Upper Limb.
•Describe the bones of the Upper Limb.
•Explain divisions of Skeleton of the Lower Limb.
•Mention regions of Skeleton of the Lower Limb.
•Describe the bones of the Lower Limb.
3. Introduction
Adult human skeleton has 206 bones
axial skeleton has 80 bones
appendicular has 126
appendicular skeleton consists of bones
“appended” to axial skeleton
girdles are bones that attach
primary function is movement
6. Upper limb
• The upper limb or superior appendicular
skeleton is studied in 2 parts:
1- Pectoral or shoulder girdle (formed by the
scapulae and clavicles )
2- Regions of the free part such as:
-Arm ( where the humerus is)
-Forearm ( that contains the ulna and radius )
-Hand (which is divided in 3 regions: carpus,
metacarpus and phalanges)
10. Parts of the upper limb
Regions Bones joints
Pectoral or Shoulder
girdle
• Scapula
• Clavicle
• Sternoclavicular joint
• Acromioclavicular joint
Arm • Humerus • Elbow joint
Forearm • Radius and ulna • Radioulnar proximal joint
• Radioulnar distal joint
Hands • Carpus
• Metacarpus
• phalanges
• Radiocarpal joint
• Interphalangeal joints
11. Pectoral Girdle
attach bones of upper limbs to axial
skeleton
clavicle
shaped
anterior part of thorax
superior to first rib
scapula
large triangular flat bone
superior posterior thorax
between levels of second and seventh ribs
13. CLAVICLE
• Classification: Flat and long bone
• Situated in the anterosuperior part of the thorax
• It connects the upper limb to the trunk
• It has 2 epiphyses or ends:
• -medial or sternal: (where it articulates with
the manubrium of the sternum at the
sternoclavicular joint. ). It has shape of saddle
• -lateral or acromial: ( It is flat where it
articulates with the acromion of the scapula at
the acromioclavicular joint )
14. The body of the bone or diaphysis has shape of S letter
15. CLAVICLE
• It has 2 surfaces:
• -Superior:
• -Inferior: (where the conoid tubercle is located)
• It has 2 convexities in its body:
• - anterior or sternal
• - posterior or acromial
18. • Classification: Flat bone
• It has a triangular shape
• It has 3 borders:
-medial: (It extends from the inferior to the superior angle )
(It is near to the vertebral column)
-lateral
-superior: ( where the suprascapular notch and the
coracoid process are located )
SCAPULA
19. • It has 3 angles:
-superior
-inferior
-lateral: where the glenoid cavity is located, and it is
the articular surface that articulates with the head of the
humerus bone in the shoulder joint. Also there is a
labrum that increases the depth of the cavity and the
amplitude of movements. Above the glenoid cavity the
supraglenoid tubercle is located, where the long head
of the biceps muscle is attached. Below the glenoid
cavity the infraglenoid tubercle is situated, where the
long head of triceps muscle is attached.
The neck of the scapula is located in this angle too.
20. • It has 2 surfaces:
-Anterior or Costal: Which is occupied by the
subscapularis muscle, situated on the subscapular
fossa.
-Posterior or Dorsal: It is divided by the spine of the
scapula into a small upper and a large lower area called
supraspinous and infraspinous fossa. The spine
continues laterally with the acromion, and this one has
an articular surface for the juction with the acromial part
of the clavicle.
25. Upper Limb
Humerus
longest and largest bone of upper limb
articulates with
scapula (proximal end)
ulna and radius (distal end)
rounded proximal head
anatomical neck below
several markings
27. HUMERUS
Classification: long bone
It is the arm bone
It is the largest bone in the upper limb
It articulates with the scapula at the glenohumeral joint and the radius and
ulna at the elbow joint
Anatomical details of the proximal end or proximal epiphysis:
- the head of the humerus,
- the anatomical neck (located below the head)
- the surgical neck , a common site of fracture (located below the anatomical
neck)
- the greater tubercle and crest of the greater tubercle
- the lesser tubercle and the crest of the lesser tubercle
- Between the 2 crest the intertubercular (bicipital) groove is located
28.
29. HUMERUS
Anatomical details of the distal end or distal
epiphysis:
- medial epicondyle
- lateral epicondyle
- trochlea (between the epicondyles)
- capitulum (laterally to the trochlea)
- olecranon fossa
- coronoid fossa
- radial fossa
- Sulcus for ulnar nerve
30.
31.
32. HUMERUS
Anatomical details of the body:
the deltoid tuberosity: laterally, for
attachment of the deltoid muscle
groove for radial nerve
33. Upper Limb
ulna
medial aspect of forearm
pinky side
longer than radius
several markings
radius
lateral aspect of forearm
thumb side
proximal end has disc shaped head
articulate with one another at three sites
carpals (wrist)
metacarpals (palms)
phalanges (finger bones)
34. ULNA
Classification: long bone
It is the medial bone of the forearm
It is medial to the radius in the supinated forearm (anatomical position)
Anatomical details of the proximal end or proximal epiphysis:
Olecranon (for articulation with the olecranon fossa of the
humerus)
Coronoid process
Trochlear notch (which articulates with the trochlea of the
humerus)
Radial notch (which articulates with the radial head )
Tuberosity of the ulna (for attachment of the tendon of the
brachialis muscle)
37. ULNA
Anatomical details of the distal end or distal epiphysis:
Head of the ulna
Articular circumference of head of ulna (which articulates
with the cubital notch of radius)
Medial or cubital styloid process
38. RADIUS
Classification: long bone
It is the lateral bone of the forearm
It is lateral to the ulna in the supinated
forearm (anatomical position)
Anatomical details of the proximal end or proximal
epiphysis:
Head of radius
(that includes:)
- The superior articular surface (which articulates with
capitulum of the humerus)
- The articular circumference of the radium (which
articulates with the radial notch of the ulna)
Neck of the radius
Radial tuberosity
40. RADIUS
Anatomical details of the distal end
or distal epiphysis:
Radial or lateral styloid process
Inferior or carpal articular
surface (wich articulates with the 3
first bones of the first line of the
carpus : scaphoid, lunate,
triquetrum or pyramidal)
46. CARPUS
It contains eight bones
in 2 lines:
• Proximal (where
appear scaphoid,
lunate, triquetrum or
pyramidal and pisiform )
• Distal (where appear
trapezium, trapezoid,
capitate and hamate )
47. METACARPUS
- They are long bones.
- The metacarpus
consists of five
metacarpal bones,
conventionally
numbered in radio-ulnar
order (fisrt, second,
third, fourth, fifth)
- They have a distal head
for articulating with the
proximal phalanges
48. PHALANGES
- They are long bones.
- There are 14
phalanges, three in
each finger
(proximal, middle
and distal), and just
two in the thumb
(proximal and distal)
53. Parts of the lower limb
Regions Bones joints
Gluteal region:
covers the side and
back of the pelvis
• Hip bone • Hip joint
Thigh: from hip to
knee
• Femur and Patella • Knee joint
Leg or crus: from
knee to ankle
• Tibia and Fibula • Tibio-fibular joints
Foot or pes: from heel
to toes
• 7- tarsal bones
• 5-metatarsal bones
• 14-phalanges
• Ankle joint
• Subtalar and transverse tarsal
joints
• Tarsometatarsal joints.
• Intermetatarsal joint
• Metatarsophalangeal joints
• Interphalangeal joints
54. Gluteal region
Back of thigh
Back of leg
Front of
thigh
Front
Dorsum of
the foot Sole of foot
Popliteal fossa
Knee region
Ankle
region
55. BONES OF LOWER LIMB
• Hip bone
• Femur
• Patella
• Tibia
• Fibula
• 7 tarsal bones
• 14 phalanges
57. Pelvic Girdle
hip bones also known as coxal bones
anterior cartilage called pubic symphysis
bones called bony pelvis
ilium
largest
ischium
inferior
posterior portion of hip bone
pubis
most anterior at pubic symphysis
59. Ilium
acetabulum
arcuate line
auricular surface
iliac tuberosity
anterior superior/inferior
iliac spine
iliac crest iliac tuberosity
posterior superior/inferior
iliac spine
Greater
sciatic notch
pubic pecten
symphysial surface
iliac spine
Lesser
sciatic notch
ischial tuberosity pubic arch
Lateral view of the
right hip bone
medial view of the
right hip bone
pelvic girdle
Hip bone
Pubis
Ilium
Ischium
arcuate line
ala
body
body
ramus
inferior ramus
superior ramus
body
Obturator
foramen
pubic tubercle
pubic crest
pubic symphysis
subpubic
angle
60. Hip / innominate bone
• Large irregular bone
• Made up of three parts
a. Superiorly: the ilium (Latin-loin)
b. Anteroinferiorly: the pubis (L. genital area)
c. Posteroinferiorly: the ischium (G. hip joint)
The three parts are joined at a cup-sha
called the acetabulum
61. Side determination
• The acetabulum is directed laterally
• The flat, expanded ilium forms the upper
part of the bone, that lies above the
acetabulum
• The obturator foramen lies below the
acetabulum; it is bounded anteriorly by
the thin pubis and posteriorly by the thick
and strong ischium
68. Pelves
Male pelves
generally larger and heavier
more prominent markings
Female pelves
generally wider and shallower
less prominent markings
79. Bones of Lower Limb
Femur
longest, heaviest, strongest bone in body
proximal articulates with hips
distal articulates with tibia and patella
patella
only common sesamoid bone
increases leverage of tendon
protects knee joint
80. Bones of Lower Limb
tibia
larger
medial
weight bearing bone of lower leg
fibula
parallel and lateral to tibia
much smaller
lateral maleolus
“ankle” on lateral surface of ankle
82. FEMUR
• The femur or thigh
bone is the longest
and strongest bone of
the body
• Like any other typical
long bone, it has two
ends upper and
lower, and a shaft.