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Ch. 6 - Review

Q & A

A Skeletal System function The Skeletal System's basic functions are to have the strength and rigidity to support soft tissues.
A Skeletal System function Also, this system is set up for protection. For example, the Pelvic Girdle protects the reproductive organs; the skull protects the brain; and the ribs protect the heart and lungs.
A Skeletal System function Assists in movement by providing surfaces the muscles can pull on to cause movement.
A Skeletal System function Responsible for Mineral Homeostasis - Calcium and Phosphorous levels in blood.
A Skeletal System function Production of blood cells takes place in the skull, breast bone, ribs, vertebra, hips, elbow, knees (ends of arm &leg bones).
A Skeletal System function Stores Triglycerides in the yellow bone marrow.
Five basic shapes of bone: Long bones, short bones, flat bones, irregular bones, and sesamoid bones.
Long Bones Long and skinny ; Arms and legs.
Short bones Same length & width ; wrist and ankles.
Flat bones Thin & flat ; Skull, ribs & breast bone.
Irregular bones No distinct shape ; Hip bones & vertebra.
Sesamoid Bones Form on the inside of tendons / Not attached to any other bone ; Knee cap
Sutures Immovable connection between bones.
Fontanels Soft soft area with no bone.
Paranasal Sinuses Air cavities in the skull.
Sutures Prevents any type of brain damage from movable bones.
Fontanels Allows baby's skull to change shape to allow for easy vaginal delivery.
Fontanels Allows bones to spread to give brain room to grow.
Paranasal Sinuses Makes skull lighter.
Paranasal Sinuses Responsible for vocal residence &singing voice.
Cervical Vertebrae Neck
Atlas Cervical #1 - holds up brain / allows you to nod
Axis Cervical #2 - allows head to rotate.
Thoracic Vertebrae Only bones attached to ribs.
Lumbar Vertebrae Lower back / bear great stress & weight / attachment of back muscles.
Sacrum 5 fused vertebrae (to add stability to Pelvic Girdle) / Posterior wall of pelvic girdle
Coccyx 3-5 fused vertebrae / Tail bone
Thoracic Cage AKA - Rib Cage
Components of the Thoracic Cage Sternum, costal cartilage, ribs, thoracic vertebrae.
Intervertebral Disks Made from Fibrocartilage to cushion vertebrae.
Scoliosis Abnormal side to side curves.
Kyphosis "Hunch back" - Exaggerated curve in the upper back.
Lordosis "Sway back" - Exaggerated curve in the lower back.
Pectoral Girdle Attaches the arms to the torso.
What bones make the Pectoral Girdle? Scapula (Shoulder Blade), Clavicle (Collar Bone).
Scapula Shoulder Blade
Clavicle Collar Bone
Pelvic Girdle Attaches Legs to torso; Provides stable non-moving brace for entire body.
What bones make the Pelvic Girdle? Coxal Bones (Hip Bones)
Coxal Bones Hip Bones
Created by: Jamiew0282