Transcript Appendicular Skeleton Appendicular Skeleton Your appendicular

Appendicular Skeleton
Appendicular Skeleton
•
Your appendicular
skeleton includes all of
the bones and joints that
make up your
appendages
•
This includes the
shoulder girdles and
pelvic girdles
Shoulder Girdle
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Your shoulder girdle
consists of two bones
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Clavicle
•
Scapula
Scapula
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You have both a right and
left scapula
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It connects to two bones
•
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Humerus
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Clavicle
The scapula is
sometimes called the
“shoulder blade”
Clavicle
•
Your clavicle is a small
bone that connects to
two bones
•
Sternum
•
Scapula
•
Your clavicle is
sometimes called your
“collar bone”
•
It is fragile. It only takes
approximately 8 pounds
Arm bones
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There are three bones
that make up the bones
of your arm
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The humerus
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The radius
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The ulna
Humerus
• The humerus is the bone
in your upper arm
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It connects to three
bones
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The radius
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The ulna
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The scapula
•
You get the term “funny
bone” from your
humerus.
The Radius
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The radius is one of two
bones of your lower arm
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In anatomical position it
is the bone on your
“thumb side” of your arm
•
It gets its name because
it has a circular head.
Think about the radius of
a circle when
remembering which one
is which.
The Ulna
•
The ulna is the other
bone in your lower arm
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It is responsible for
creating a majority of the
joint of your elbow
•
It is on the pinky side of
your arm in anatomical
position.
The Hands
•
Your hands are made up
of 27 bones.
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You have 14 phalanges
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You have 5 metacarpals
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you have 8 carpal bones
Phalanges
•
The phalanges make up
the “finger bones” of your
hand
•
Each finger has three
phalanges except for the
thumb which has only
two.
Metacarpals
•
Your metacarpals are the
bones of your hand that
are long bones
•
You have one for each
finger
Carpals
•
You have carpal bones
which make up the bones
of your wrist
•
These 8 bones are
bound by ligaments to
restrict their movement
Pelvic Girdle
•
Your legs attach to your
thorax via the pelvic
girdle
•
The pelvic girdle is made
up of a left and right os
coxae.
Os Coxae
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Each os coxae is made
up of three bones that
are fused together in
early development
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The Ischium
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The Ilium
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The Pubis
The ischium
•
The ischium is the curved
bone that forms the
obturator foramen of the
os coxae
•
It connects to both the
ilium and pubis at the
acetabulum
Ilium
•
The ilium is the large fan
like bone that forms the
“hip” portion of the os
coxae
•
The width from one iliac
crest to the other is
called the false pelvis
•
The true pelvis is near
the pelvic outlet
Pubis
•
The pubis is the anterior
connection point of the
left and right os coxae
•
It is the smallest of the 3
bones that make up the
os coxae.
Male and Female differences
in ossa Coxae
•
The female inlet is large
and more circular
•
The female bones are
usually lighter and
thinner
•
The angle of the pubic
arch is usually greater
than 90 degrees
Legs
•
Like your arms your legs
are made up of three
bones
•
One bone makes up the
upper leg
•
Two bones make up the
lower leg
Femur
•
The femur is the largest,
heaviest, and strongest
bone in the entire body
•
It has a large ball head
the connects to the
acetabulum of the ossa
coxae
Fibula and Tibia
•
You have two bones that
make up the lower legs
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The fibula -- skinner and
on the lateral side in
anatomical position
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The tibia -- bigger and
bulkier than the fibula.
Located medially to the
fibula.
•
Only the tibia connects to
the femur and patella
Feet
•
Your feet are composed
of 26 bones
•
We break the feet up into
3 sections similar to our
hands
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Phalanges
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Metatarsals
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Tarsals
Phalanges
•
Just like in your hands
you have 14 phalanges
•
The consist of a
proximal, medial, and
distal phalange
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Your “big toe” is
constructed similarly to
your thumb and does not
have a medial phalange
Metatarsals
•
Just like in your hands
you have 5 metatarsals
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Each one corresponds to
a set of phalanges
Tarsals
•
In your feet you have 7
tarsal bones
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The two biggest are the
talus and calcaneus
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The talus connects your
feet to your tibia and
fibula
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Your calcaneus is your
“heel”
Patella
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Your “knee cap” is a
singular bone
•
It connects to the femur,
and tibia