Domain 1 Flashcards
Nervous System
Communication network within the body
Central Nervous system CNS
Brain and spinal cord it cordinates activity of they body
Peripheral nervous system PNS
Nerves connecting the CNS to the rest of the body and enviroment
Periphear nervous system subdivions
Somatic: Serves outer areas of the body and skeletal muscles.
Autonomic: Involntary systems such as heart or digestive system
Autonmic subdivions
Parasympathetic: Decrease activiation during rest and recovery
Sypathetic: Increase activaition to prep for activity
Neuron
Function unit of the nervouse system
Motor (Efferent) neurons
Transmit nerve impules from CNS TO EFFECTOR SITES
Sensory (Afferent) Neurons
Respinde to stimuli; transmit nerve impules from effector sites to CNS
Mechanoreceptors
Sense distortion in body tissues
Joint Receptors
Respond to pressure, acceleration, and deceleration on joints
Golgi tendon organs GTO
Senses change in muscular tension
Muscle Spindles
Sense Changes in muscle length
Tendons
Connect muscle to bone and provide an ancor point for muscles to produce force
Fascia
Outer layer of connective tissue surrounding a muscle
Fascicles
Bundle of individule muscle fibers
Muscle fiber
Celluelar components and myofibrils encaes in plasma membrane
Sarcomere
Produces muscular contracation; repeating section of actin and myosin
Sliding filament theory
Thick and think filaments slide past one another, shortening the entire sacomere
Type 1 slow twitch muscles
smaller size and fatigue slowly
Type 2 quick twtich muscles
larger in size are quick to produce maximal tension and fatigue quickly
Motor unit
One motor neuron and the muscle fibers it connects with
Neural activation
Contraction of a muscle generated by neaural stimulation
Neurotransmitter
Chemicl messengers that transport impulses from nerve to muscle
Local stabilaztion system
Attaches directly to vertebrea consistes of the transvere abdominis, internal oblique, multifidus, pelvic floor and diaphragm
Gloabl stabilizaiton system
Attaches from pelvis to spine, consistes of quadratus lumbrorum, psoas majorm external obliquem rectus abdominis, gluteus medius, adductir complex and portions of internal oblique
Movment system
Attaches the spin and or pelvis to the extremites consists od latissumus dordi, hip flexors, hamstring complez, quadricpes
Acial skleton
Skull, rib cage and verterbal column
Appendicular skelotin
Upper and lower extremites shoulder and pelvic gurdles
Skeletal system function
Supports, protects, allows bodily movemnts, produces blood and stores minerals
Depressions
Flattens or indenter portions of bone can be muscle attament sites
Process
Projection protruding from a bone, muscl, tendons and ligments that can attatch
Ligaments
Connects bone to none they have little blood supply and are slow to heal
Arthokinmmatics
Joint motions
Non- Synovial Joints
No joint cavity, conncetive tissues or cartulage, little to no movement
Synovial joints
Held together by joint capsule and ligaments. assocaited with movements
Major motion typers
Roll, slide, spin
Important motion types to know
Hinge: Elbows, ankles, sagittal plane movement
Ball and socket: Shoulders hips, most modbile all three planes of motion
Weight baring exercise
Is the best method to strengthen bones
Endocrine system
System of glands secreaste homrmoes to regulate bodily function
Tesosterone
Responsible for male sex traits
Estrogen
Responsible for female sex traites
Growth Hormone
Anabolic hormone response for bodily groth until puberty
Insulin
Regulates energy and glucose metabolism in the body
Cardiorespitory system
Cardiovascular and respiratory systems
Cardiovasuclar system
Heart, Blodd, and blood vessels
Cardiac muscle
Shorter more tightly connected that skelatl muscle this is involuntary
Atria
Small superior chambers of the heart that recives blood from veins
Right atrium
Gather deoxygenated blood returning to the hears