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Nervous System
The communication network within the body.
Sensory Function
The ability of the nervous system to sense changes in either the internal or external environment.
Integrative Function
The ability of the nervous system to analyze and interpret sensory information to allow for proper decision making, which produces the appropriate response.
Motor Function
The neuromusclar reesponse to the sensory information.
Neuron
The functional unit of the nervous system.
Sensory (Afferent) Neurons
Transmit nerve impulses from effector sites to the brain or spinal cord.
Interneurons
Transmit nerve impulses from one neuron to another.
Motor (Efferent) Neurons
Transmit nerve impulses from the brain and spinal cord to effectorr sites
Central Nervous System
Composed of the brain and spinal cord.
Peripheral Nervous System
Cranial and spinal nerves that spread throughout the body.
Mechanoreceptors
Sensory receptors responsible for sensing distortion in body tissues.
Muscle Spindles
Receptors sensitive to change in length of the muscle and the rate of that change.
Golgi Tendon Organs
Receptors sensitive to change in tension of the muscle and the rate of that change.
Joint Receptors
Receptors that respond to pressure, acceleration, and deceleration in the joint.
Skeletal System
The body's framework, composed of bones and joints.
Bones
Proviede a resting ground for muscles and protection of vital organs.
Joints
The movable junction where two or more bones meet.
Axial Skeleton
Portion of the skeletal system that consists of the skull, rib cage, and vertebral column.
Appendicular Skeleton
Portion of the skeletal system that includes the upper and lower extremities.
Depression
Flattened or indented portion of bone, which can be a muscle attachment site.
Process
Projection protruding from the bone where muscles, tendons, and ligaments can attach.
Arthrokinematics
Joint motion.
Synovial Joints
Joints that are held together by a joint capsule and ligaments and are mo st associated with movement in the body.
Nonsynovial Joints
Joints that do not have a joint cavity, connective tissue, or cartilage.
Ligament
Primary connnective tissue that connects bones together and provides stability, input to the nervous system, guidance, and the limitation of improper joint movement.
Sarcomere
The functional unit of muscle that produces muscular contraction and consists of repeating sections of actin and myosin.
Tendons
Connective tissues that attach muscle to bone and provide an anchor for muscles to produce force.
Neural Activiation
The contraction of muscle generated by neural stimulation.
Motor Unit
A motor neuron and all of the muscle fibers it innervates.
Neurotransmitter
Chemical messenger that cross synapses to transmit electrical impulses from the nerve to the muscle.
Musclar System
Series of muscles that move the skeleton.
Kinetic Chain
The combination and interrelation of the vervous, muscular, and skeletal system.
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