Card Set Information
What is the study of movement/motion?
includes: anatomy, physiology, physics, geometry, biomechanics
What is biomechanics?
mechanical principles that relate to the human body
includes static and dynamic
What means not moving or at rest?
What means moving and is associate with various activities?
What are the 2 subdivisions of dynamics?
What are the forces causing movement?
What is the time, space, and mass aspects of a moving system that describes positions and motions of the body?
What three things will tell you muscle actions?
-what motions a particular joint follows
-a muscle must span a particular joint to cause motion
-line of pull of a muscle
What is another name for linear motion, and what are the 2 subdivisions?
What type of motion occurs more or less in a straight line from 1 location to another?
What type of movement occurs in a straight line? in a curved path?
rectilinear - straight
curcillinear - curved
What is another name for rotary motion?
What is the movement around a fixed point?
What are the functions of the skeletal system?
-support for soft tissues
-movement(bones serve as levers and joints as fulcrums)
-protection (vital organs)
-mineral storage (calcium and phosphorus)
-production of blood cells (hematopoiesis)
What are the 2 types of skeletons?
What is the axial skeleton?
upright part of body; 80 bones in the head, thorax, and trunk (down to the sacrum)
What is the appendicular skeleton?
126 bones of the extremities
What is compact bone?
-hard, dense, outer shell
-completely covers bone
-thick along shaft and plates of flat bones
-thin at ends of long bones
What is cancellous bone?
-porous, spongy, inside portion
-same material as compact, but more porous and contains less solid material
-loose mesh structure or pores filled with marrow-lighter
-makes up most of the articular ends of bones
what is the area at each end of the diaphysis and is wider than the shaft?
growin bones-cartilaginous (epipyseal plate)
What manufactures new bone?
What is the main shaft of the bone and is primarily compact?
What is the pasage for nutrient arteries?
What is for bone resorption?
What is primarily cancellous, and provides support?
What is the thin fibrous membrane that covers all the outside of the bone except the articular surfaces and has attachments for tendons and ligaments?
What is a long bone?
length > width
*for weight bearing; have condyles, tubercles, and tuberosities which serve as attachments for tendons and ligaments
What is a short bone?
dimensions are equal, cubical shaped
What are flat bones?
broad surface, not thick
What are irregular bones?
variety of mixed shaped
What are sesamoid bones?
small bones resembling sesame seeds, located where tendons cross long bones, and they change the angle of attachment and protect from excessive wear