Skeletal System Flashcards
Long bone features
Tubular, long, shaft with marrow cavity, rigid levers acted upon by muscles
Types of bones
Long, short, flat, irregular, sesamoid
Sesamoid bones developed
Within a tendon
Bone features
Diaphysis- shaft
Epiphysis- rounded ends of a long bone
Metaphysics- neck of long bone
Diaphysis
Shaft of bone
Epiphysis
Rounded ends of long bones
Metaphysis
Neck of long bone
Bone elevations
Linear (aka line, ridge, crest)
Large (aka process, tuberosity, trochanter, epicondyle)
Small (aka protuberance, tubercle, spine)
Bony depressions
Fossa
Small (groove, notch, sulcus)
Bony Facets
Small projections covered in cartilage
Bony forearm
Opening or holes
Meatus
Opening with no direct exit
Canal
Has an opening on both sides of the bone
What makes up skeletal system
Bones, cartilage, ligaments and tendons
Ligaments
Hold bones at joints
Tendons
Attach muscles to bones
What makes up axial skeleton
Skull, vertebrae, ribs, sternum, hyoid
Appendicular skeleton
Limbs
Why is the skeleton important
Structure, protection, movement, blood formation (bone marrow), mineral storage
Cortical
Outer shell of bone
Medullary cavity
Bone marrow
Periosteum
External connective tissue
Endosteum
Internal connective tissue
How many bone in kids and adults
~300 at birth, 206 as adults