Skeletal System
Anatomical Postion
Body Planes and Directions
Skeletal System
Terminology
• Osteo-Bone, frame work
Skeletal System
Terminology
• Osteo-Bone
• Myel/o- Bone marrow- creates
bloods cells
Skeletal System
Terminology
• Osteo-Bone
• Myel/o- Bone marrow
• Arthr/o- Joints-makes motion
possible
Skeletal System
Terminology
• Osteo-Bone
• Myel/o- Bone marrow
• Arthr/o- Joints-
• Chondr/o- Cartilage- creates
smooth surface for joints and
protects ends of bones
Skeletal System
Terminology
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Osteo-Bone
Myel/o- Bone marrow
Arthr/o- Joints
Chondr/o- Cartilage
• Burs/o- Bursae— fluid filled
sack that cushions areas
subjected to friction
• 20 Little Known Facts About The Human Body
• A human being loses an average of 40 to 100
strands of hair a day.
• A cough releases an explosive charge of air that
moves at speeds up to 60 mph.
• Every time you lick a stamp, you're consuming
1/10 of a calorie.
• A fetus acquires fingerprints at the age of three
months.
• A sneeze can exceed the speed of 100 mph.
• Every person has a unique tongue print.
• According to German researchers, the risk of
heart attack is higher on Monday than any other
day of the week.
Skeletal System
• Functions- provides frame
work, calcium storage, blood
cell formation, movement
Skeletal System
• Functions- provides frame work, calcium
storage, blood cell formation, movement
• 206 bones- a few people will
have 205 or 207
Skeletal System
• Functions- provides frame work, calcium
storage, blood cell formation, movement
• 206 bones- a few people will have 205 or
207
• Axial Skeleton- 80 bones,
skull, spine, ribs and sternum
Skeletal System
• Functions- provides frame work, calcium
storage, blood cell formation, movement
• 206 bones- a few people will have 205 or 207
• Axial Skeleton- 80 bones, skull, spine, ribs and
sternum
• Appendicular skeleton- 126
bones, upper and lower
extremities, shoulders, and pelvis
• After spending hours working at a computer
display, look at a blank piece of white paper. It
will probably appear pink.
• An average human drinks about 16,000 gallons
of water in a lifetime.
• A fingernail or toenail takes about 6 months to
grow from base to tip.
• An average human scalp has 100,000 hairs.
• It takes 17 muscles to smile and 43 to frown.
• Babies are born with 300 bones, but by
adulthood we have only 206 in our bodies.
• Beards are the fastest growing hairs on the
human body. If the average man never trimmed
his beard, it would grow to nearly 30 feet long in
his lifetime.
Bone structure
Typical Long Bone
Epiphysis
Diaphysis
Epiphysis
Other bone landmarks
• Foramen- hole in the bone for blood
supply and nutrient transport
Other bone landmarks
• Foramen- hole in the bone for blood
supply and nutrient transport
• Tubercle- bump for tissue attachment
Articulations-Joints
Articulations-Joints
• 2 or more bones join together/connect
Articulations-Joints
• 2 or more bones join together/connect
• Ligaments hold bones together
Types of joints
• Suture- immovable joint in the skull
Types of joints
• Suture- immovable joint in the skull
• Symphysis- moves slightly,
connect pubic bones together
Types of joints
• Suture- immovable joint in the skull
• Symphysis- moves slightly, connect
pubic bones together
• Synovial – movable joint, most
of the joint in the body are
synovial
Synovial Joints
• A joint capsule surrounds the joint
Synovial Joints
• A joint capsule surrounds the joint
• Filled with synovial fluid
– Lubricates and cushions the joints
– Provides nutrients to the joints
Types of Synovial Joints
• Ball and Socket—hip and shoulder joints
Types of Synovial Joints
• Ball and Socket—hip and shoulder joints
• Hinge- knee and elbow
Types of Synovial Joints
• Ball and Socket—hip and shoulder joints
• Hinge- knee and elbow
• Saddle- ankle and thumb- rotation
• By age sixty, most people have lost half of their
taste buds.
• By the time you turn 70, your heart will have
beat some two-and-a-half billion times (figuring
on an average of 70 beats per minute.)
• Each square inch of human skin consists of
twenty feet of blood vessels.
• Every human spent about half an hour as a
single cell.
• Every square inch of the human body has an
average of 32 million bacteria on it.
• Fingernails grow faster than toenails.
• Humans shed about 600,000 particles of skin
every hour - about 1.5 pounds a year. By 70
years of age, an average person will have lost
105 pounds of skin.
Bone to Memorize
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HumerusUlna
Radius
Carpals
Phalanges
Femur, trochanter, head, neck
Patella
Bone to Memorize
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Tibia
Fibula
Talus
Calacaneous
Sternum
Xyphoid proccess
Manubrium
Bone to Memorize
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Clavicle
Cervical vertebrae
Thoracic Vertebrae
Lumbar Vertebrae
Sagittal sutures
Coronal sutures
Fontanel
Mandible
Bone to Memorize
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Tarsals
Metacarpals
Metatarsals
Ilium
Sacrum
Scapula
Ribs- 7 true, 3 false, 2 floating
Extra stuff
• Right vs Left- humerus and femur
• Hold the bone up to your body, understand
the angles and projections
• Be able to identify bones from an x-ray
Male vs Female
the “glass” sign