Final Exam Flashcards
actin
thin filament (I band) in the sliding filament model
aerobic system
energy system, long term, running, need air for this system
av O2 (oxygen) difference
arterial venous oygen difference, what the muscles use to perform work
biceps (brachii)
flexion of the forearm, antagonist of extension of the forearm
cardiac output
heart rate multiplied by blood pressue
concentric contraction
muscles shorten with force (bicep curl)
deltoids
abduct the shoulder (horizontal and frontal)
diarthodial joint
joint with TWO actions (the knee)
diastole
a chamber of the heart filling with blood, relaxation
eccentric contraction
muscles elongate with force
extension
opposite of flexion; return to anatomical position
flexion
decrease in range of motion (ROM); bending movement around a joint or limb that decreases the angle between bones
gluteus maximus
extension of hip/thigh
glycolytic
energy system; moderate power/short (moderate) duration, next in line after the ATP-PC system runs its course
hamstrings
vastus medialus, vastus lateralus, and semitendinousus; knee flexion and hip extension
isometric contraction
no movement in muscle when force is exerted
lactate threshold
lactic acid (the by product of muscle exertion), tolerance for lactic acid
latissimus dorsi
back muscles (on the side), worked on by pulloever exercises and this muscle is the secondary muscle for most exercises
left atrium
chamber of the heart, the top of the left side, blood leaves here, goes through mitral valve and then into left ventricle
left ventricle
chamber of the heart, bottom of left side, blood leaves here, goes through the aeortic valve and then into the aeorta
mitral valve
also called the bicuspid valve; prevents backflow into left atria
motor unit
nerve fibers and muscle fibers it innervates; muscle
myosin
the thick filament in the sliding filament model
oxidative
with oxygen
pectoralis major
flexion, adduction and medial rotation of the humerus
phosphocreatine system
anaerobic; surge of energy (lift up a car - approx 10 second)
quadriceps
on the front of leg; extension of leg
rectus abdominus
“six pack”; trunk flexion
right atrium
top of right side
right ventricle
bottom left
SA Node
“pacemaker”; send electrical message (P wave)
QRS wave
AV node
striated band
actin and myosin, actin is light
stroke volume
the amount of blood pumped out with each beat (EDV-ESV)
synarthrodial joint
joint that does about every action
systole
heart contraction
T Wave
Diastole
triceps
back of the arm; extension of forearm
tricuspid valve
on the right side (between right atrium and ventricle)
EKC
electocardiogram
heart attack
low stroke volume
Risk Factors of Coronary Disease
- Age
- Family History
- Cigarette Smoker
- Sedentary Lifestyle
- Obesity
- Hypertension
- Dyslipidemia
- Prediabetes
What is the negative risk factor
HDL greater or equal to 60 mgdL
