Flashcards in Skeletal System Deck (44)
What are the 5 functions of the skeletal system?
Support, protection, body movement, blood cell formation, stores inorganic minerals
What are the five major types of bone?
Long, short, flat, sesmoid, irregular
Anatomical name for the shaft of a long bone
Anatomical name for the ends of a long bone
A band of cartilage that remains between two ossification centers; growth plate
Site of spongy bone in an adult?
Cartilage that covers the ends of long bones at the joints; provides a gliding surface on bones
Site of compact bone in an adult?
Site of hematopoiesis?
Formation of blood cells
Site of fat storage
site of longitudinal growth in a child
Why do bone injuries heal faster than cartilage injuries?
bones have a higher blood supply which contains more nutrients to heal
where are osteocytes located?
Immature or matrix-depositing bone cells
Bone cells that liquefy bone matrix and release calcium to the blood
Why do astronauts do isometric exercises when in space?
lack of gravity
Residences of osteocytes
Longitudinal canal carrying blood vessels and nerves
Nonliving structural part of bone
Tiny canals connecting lacunae
What is the function of the inorganic part of the matrix?
flexibility and strength
The formation of bone
how does intramembraneous bones form?
Osteoblasts appear in the connective tissue and deposit bony matrix which makes spongy bone form
How does endochondral bones form?
Cartilage models form and rapidly divides, forms compact bone and blood vessels
Name two ways the fetal skull differs from the adult skull
Fetal skull can still move around because it still has soft spots. Adult skulls have the parts of the skull fused together making the head more durable
A break in a bone
What are the 6 types of fractures?
spiral, greenstick, fissured, comminuted, transverse, oblique
How do fractures heal?
Blood escaping from the damaged blood vessels form a hematoma, spongy bone and fibrocartilage form, bony callus replaces the cartilage and osteoclasts remove the excess bony tissue
What are 2 factors that keep bones healthy?
good nutrition and exercise
What are 2 factors that can cause bone to become soft?
lack of nutrition (minerals) not enough calcium in bones
Putting bones back in place
A cylinder shaped unit including bone cells that surround a central canal
Fracture that occurs on the convex surface of the bend in the bone
Longitudinal break in bone
A complete fracture and fragments in the bone
Break occurs at a right angle to the axis of the bone
Occurs at an angle other than at a right angle to the axis of the bone
Caused by excessive twisting of a bone
Consists of the bones of the upper and lower limbs and the bones that anchor the limbs to the axial skeleton
Consists of bony and cartilaginous parts that support and protect the organs of the head, neck, and trunk
How many bones are included in the appendicular skeleton?