Lesson 8 Flashcards
Structural functions of skeletal system
support soft tissues
attachment sites for most muscles
Skeletal system is the storehouse for what 2 essential minerals?
calcium and phosphour
Cortical cells make up ___% of skeleton and trabecular makes up __%
75,25
Provides strength, is tendon attachment site, and protects organs
cortical
Provides large surface area for mineral exchange and helps maintain skeletal strength
trabecular
Proximal Epiphysis
top of bone
Distal Epiphysis
bottom of bone
Epiphyseal Cartilage
growth plate
Osteablasts
building bone
Osteoclasts
breaking down of bone
Indicates that changes in bone structure coincide with changes in bone function
Wolff’s Law
How many bones in axial skeleton?
74 out of 206
How many bones make u appendicular skeleton?
remaining 126 bones
3 types of joints
Fibrous, cartilaginous, synovial
Uniplanar/Uniaxial joints
joints only moving in one plane, one axis of rotations (elbow)
4 general groups of movement occurring in synovial joints
- gliding
- angular
- circumduction
- rotation
Joints held tightly together, allow little/no movement
fibrous
Joints connected by cartilage, allow little or no movement
Cartilaginous
Joints that are freely moveable
Synovial
4 angular movements defined for synovial joints
- flexion
- extension
- abduction
- adduction
System that gathers info, stores it, and controls various bodily systems in response to this input
nervous system
Connection of muscles to brain and spinal cord through network of nerve circuits that direct the ebb and flow of muscular energy
neuromuscular system
CNS consists of…
brain and spinal cord
