Exam 1: Developmental Anatomy Flashcards
Describe the process of endochondral ossification
Where does it begin?
Midpoints of long bones
Describe the process of endochondral ossification
What happens within the primary and secondary ossification centers?
Describe the process of endochondral ossification
How do bones grow in length?
They grow at the end of bones (aka epiphyseal or growth plates)
Describe the process of endochondral ossification
What happens to the growth plate at full skeletal development?
Growth plate narrows & shaft fuses with growth plate.
Why & when is the growth plate susceptible to injury?
What are pressure epiphysis?
Forms the joint. Provide for growth & length of long bones.
What are traction epiphysis?
Not involved in joint formation. Contribute to bone shape, not growth.
Describe and provide an example:
What is Wolff’s law?
When repetitive stress is applied to bone, bone changes
Example: boy who was bed bound and couldn’t use his legs
What are prenatal muscle fibers?
Small fibers with high water and electrolyte content
What are postnatal muscle fibers?
Small, closely packed fibers
Growth directly related to activity level
Describe this term
Muscular differences observed between sexes during adolescent development.
Girls stop adding muscle at 13-14
Boys stop at 17-18
How does cardiac muscle develop throughout one’s life?
