Animal Science Chapter Three Flashcards
Cortical bone is ______
is hard, dense, strong bone
Cortical bone forms the ____ layer of bone. Also called compact bone
Outer
What is cancellous bone?
A lighter, less strong bone that is found in the ends and inner portions of long bones. Also called spongy bone
What is a long bone?
Bones consisting of a shaft; two ends and a marrow cavity
What are short bones?
Cube shaped bones with no marrow cavity
What are flat bones
Thin, flat bones
What are pneumatic bones
Unpaired bones
What are irregular bones?
Unpaired bones
Sesamoid bone
Small bones embedded in a tendon
What is an osteoblasts
Immature bone cells that produce bony tissue
Define osteoclasts
Are phagocytize cells that eat away bony tissue from the medullary cavity of bone
Define Osteocytes
Mature osteoblasts
____ allow no movement
Synarthrosis
_____ allow slight movement
Amphiarthrosis
_____ allows free movement
Diarthroses
Define suture
Is a jagged line where bones join and form a non movable joint. Example: found in the skull
Fontanelle
A soft spot remaining at the junction of sutures that usually closes after birth. An example would be in the skull
Define symphysis
A joint where two bones join and are held firmly together so that they function as one bone. Example: pelvis
Define cartilaginous joint/ symphysis
A joint where two bones join and are held firmly together so they function as one joint
Example is pelvis
Define Synovial joint
A ball and socket joint. Example would be at the shoulder
Ball and socket joint
Allows a wide range of motion in many directions such as the hip joint
Define Arthrodial joint
Joints with oval projections that fit into a socket. Example is carpal joint
Define trochoid joint
Pulley shaped joints like the connection. Between the atlas and axis. Example is axis and atlas
Define Hinge joint
Allows motion In one place or direction. Example is canine stifle and elbow joint
