Chapter 5 NASM Nervous system

The human movement system includes an integration of the

Nervous, Skeletal, and Muscular systems

The nervous system provides

Sensroy(afferent) and Motor (efferent) info

The functional unit of the nervous system

Neuron

The nervous system includes the

CNS (brain and spinal cord) and PNS (somatic and autonomic nervous systerm)

PNS contains different types of sensory receptors such as

Mechanoreceptors, Nociceptors, Chemoreceptors, and Photoreceptors

The ____ are 2 important sensory receptors (mechanoreceptors)

Muscle spindle and Golgi tendon organ

The PNS contains 2 subdivisions

Somatic and autonomic nervous systems

The nervous system requires different electrolytes for proper functions

Sodium, Potassium, Magnesium and water

Motor skill development often occurs in 3 stages

Cognitive, Associative, and Autonomous

Human movement system (HMS)

Collective components and structures that work together to move the body

3 components of a neuron

Cell body, Axon and dendrites

Central nervous system (CNS)

Division of the nervous system that includes the brain and spinal cord

Peripheral nervous system (PNS)

Nerves that connect to the rest of the body to the central nervous system (limbs)

Afferent Pathway

Sensory pathway that relays info to the central nervous system

Efferent pathway

Motor pathway that relays info from the central nervous system to the rest of the body

Mechanoreceptors

Structures that respond to mechanical forces (touch and pressure)

Somatic nervous system

Nerves for voluntary controlled movement

Autonomic nervous system

Nervous system that supplies neural input to organs that run the involuntary processes of the body (blood, digesting food)

Sympathetic nervous system

Subdivision of the autonomic nervouse system that works to increase neural activity and put the body in a heightened state (fight or flight)

Parasympathetic nervous system

Subdivision of the autonomic nervous system that works to decrease neural activity and put the body in a relaxed state (Rest/Digest)

Proprioception

Body’s ability to naturally sense its general orientation and relative postion

Muscle spindles

sensory receptors sensitive to change in length of muscle and rate of that change

Golgi tendon organ

Specialized sensory receptor located at the point where skeletal muscle fibers inserted in the tendons of the skeletal muscle. Sensitive to change in muscle tension and rate of change.

3 stages of motor skill development

stage 1 cognitive- Break down the skill into smaller steps for the client

Stage 2 associative- Need to help refine clients skills through proactive

Stage 3 autonomous- Can teach clients a new version of skill to further challenge them