Skeletal System

Anatomical Postion

Body Planes and Directions

Skeletal SystemTerminology

• Osteo-Bone, frame work

Skeletal SystemTerminology

• Osteo-Bone

• Myel/o- Bone marrow- creates bloods cells

Skeletal SystemTerminology

• Osteo-Bone

• Myel/o- Bone marrow

• Arthr/o- Joints-makes motion possible

Skeletal SystemTerminology

• Osteo-Bone

• Myel/o- Bone marrow

• Arthr/o- Joints-

• Chondr/o- Cartilage- creates smooth surface for joints and protects ends of bones

Skeletal SystemTerminology

• 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

Epiphysis

Diaphysis

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

• Humerus-

• Ulna

• Radius

• Carpals

• Phalanges

• Femur, trochanter, head, neck

• Patella

Bone to Memorize

• Tibia

• Fibula

• Talus

• Calacaneous

• Sternum

• Xyphoid proccess

• Manubrium

Bone to Memorize

• Clavicle• Cervical vertebrae• Thoracic Vertebrae• Lumbar Vertebrae• Sagittal sutures• Coronal sutures• Fontanel• Mandible

Bone to Memorize

• 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 Femalethe “glass” sign