Exam 1 - Kines text Chapter 2 Flashcards
What causes us to move and what allows us to move efficiently without apparent thought?
(some of these systems include:)
Neuromuscular system
Muscular system
skeletal structures
Part of the peripheral nervous system; efferent or motor innervation controlling the viscera; innervates smooth and cardiac muscle as well as glands; supplies info from the INTERNAL environment; basically it helps maintain internal balance as it responds to internal stimuli
Autonomic Nervous System
ANS
Autonomic Nervous System
CNS
Central Nervous System
Also called efferent; relays information from the CNS to structures that need to react or respond; carries info away from CNS
Motor Neuron
The division of the Nervous System that includes the brain & spinal cord
Central Nervous System
PNS
Peripheral Nervous System
The division of nervous system that links the CNS with the muscles and glands; provides sensory info to the CNS; further subdivided into autonomic and somatic divisions
Peripheral Nervous System
Also called afferent; transmits signals from receptors to the CNS; carries info to the CNS
Sensory Neuron
Subdivision of the PNS; sensory receptors and nerves related to the external environment; nerves linking these to the CNS and efferent nerves returning to the skeletal muscle; responds to things happening outside of the body
Somatic Division
Organs located within body cavities
Viscera
Motor neurons in the CNS are referred to as _________.
UMNs - upper motor neron
Motor neurons in the PNS
LMNs
T/F - the ANS has cell bodies in both the CNS and PNS
T
Loss of voluntary movement due to increase in muscle tone including spasms, tendon reflexes are increased or hyperexcitable
spastic
What is hypertonia?
increased muscle tone - Jason suffers from this
Kinesiology for $500: This is known as a loss of voluntary movement due to lack of muscle tone; tendon reflexes are also decreased or absent.
What is flaccid paralysis? Correct!
What is hypotonia?
decreased muscle tone
loss of muscle refers to
atrophy
T/F - Peripheral nerves have the capacity for regeneration and repair if the cell body remains intact
T
How much does the peripheral nerves regenerate?
2 to 4 mm/day
CNS is divided into 5 levels of control - what are these 5 levels of control?
cerebral cortex, basal ganglia, cerebellum, brainstem, and spinal cord
The cerebral (motor) cortex is concerned with ______ movement.
voluntary
related to the canal of the ear, the organ of equillibrium
vestibular
the ability to receive stimuli from within one’s body, such as from muscles, tendons, & other internal tissues
proprioceptive
What does COPD stand for?
chronic obstructive pulmonary disease
This disease is characterized by degenerative changes in the alveoli, resulting in breathlessness on exertion.
COPD
Incoordination; inability to execute coordinated voluntary movement; loss of smooth execution of movement
Ataxia
wasting of tissue, esp. in muscle due to lack of use
atrophy
irregular, involuntary movements of the limbs or facial muscles, often described as dance-like motions
Chorea
Difficulty in performing voluntary movements; (The word is divided into two parts - ___ meaning bad or difficult, ______ referring to movement)
Dyskinesia
Accumulation of excessive amounts of watery fluid in cells, tissues or serious cavities
Edema
External receivers, afferent nerve endings that respond to stimulation by external agents, specialized in receiving info from the external envionment, such as the eyes
Exteroreceptors
Sometimes referred a flexor reflex, protective; the withdrawal of a limb in response to painful stimulation
flexor withdrawl
relaxed, without tone
flaccid
“above or over tone” - extreme tension of the muscles
hypertonia
“under tone”; having a lesser degree of tension; diminished muscular tone
hypotonia
“Internal receivers,” afferent nerve endings or receptors that respond to stimulation from within the body, primarily from visceral organs.
Interoreceptors
the normal state of tension of muscles caused by partial contractions of some of the muscle fibers
Tone
loss of power of voluntary movement in a muscle through injury or disease to its nerve supply
paralysis
A sensory end-organ in muscles, tendons, joint capsules, and inner ear allowing us to know the location of one body part in relation to another; activated by movement or action of the organism itself
proprioceptor
a state of increased muscular tone, muscles are continuously tight or stiff
spasticity
slight stretching of a muscle lengthens fibers, causing stimulation of sensory endings, which leads to contraction of the muscle. Protective reflex to avoid overstretching
stretch reflex
related to the vestibule of the ear; a vestibule is a small space or region at the entrance of a canal
vestibular
Muscle tension develops, but the muscle length does not change.
Isometric contraction