chapter 2 Flashcards
human movement system
the combination and interrelation of the nervous, muscular, and skeletal system
nervous system
a conglomeration of illion of cells specifically designed to proved a COMMUNICATION network within the body.
neuron
the functional unit of the nervous system
sensory AFFERENT neurons
transmit nerve impulses from effector sites (such as muscles and organs) via receptors to the brain and spinal cord
interneurons
transmit nerve impulses from one neuron to another
motor EFFERENT neurons
transmit nerve impulses from the brain and spinal cord to the effector sites such as muscles or glands
central nervous system
CNS
brain and the spinal cord and primary function is to coordinate all the activity of all the parts of the body
peripheral nervous system
PNS
consists of nerves that connect the CNS to the rest of the body and the external environment
mechanoreptors
specialized structors that respond to mechanical pressure within tissues and then transmits signals through sensory nerves. Muscle spindles, Golgi tendon organs, and joint receptors
muscle spindles
mechanoreptors that respond to length. prevent over stretching
Golgi tendon organ
mechanoreptors.
ten tension
causes the muscles to relax which prevents the muscles from excessive stress or possibility of injury
joint capsule
mechanoreptors
they respond to pressure, acceleration, and deceleration of the joint
skeletal system
shape and forum
the body framework of composed bones and joints
supporting, protecting, allowing bodily movement
muscular system
series of muscles that moves the skeleton
muscles generate internal tension that under the control of the nervous system manipulates the bones of our body to produce movements. Muscles are the movers and stabilizers of our bodies
skeletal muscle
one of three major muscle types in the body. It is made up of individual muscle fibers held together by connective tissue
