Bones
what is the bone that makes up the shoulder blade
scapula
what is the muscle group consists of 4 muscle in the front of thigh
quadriceps
what muscle fiber type is oxidative/aerobic in nature
Type 1, slow-twtitch
which chamber of the heart receives oxygenated blood
left atrium
what principle is responsible for Type I fibers being recruited first
size principle
sacrum
which muscle flexes the arm at the elbow
biceps brachii
what type of muscle tissue is striated and involuntary
cardiac
what do alveoli do
oxygenate blood as it passes through the pulmonary circulatory system
what is the pacemaker of the heart
sinoatrial (SA) node
what are the 8 bones of the wrist called
carpals
what muscle performs plantarflexion and flexion at the knee
gastrocnemius
what ion is necessary for excitation-coupling
calcium
what happens to blood vessels in active skeletal muscles during exercise
vasodilation
what is the antagonist muscle to the triceps brachii
biceps brachii
what are the 5 bones of the midfoot called
metatarsals
what actions does the triceps brachii perform
extension at the elbow
what myofilament performs power stroke
myosin
what happens during sympathetic activation during acute bout of exercise
HR, BP, oxygen demand, SV, Q all increase
what does diastolic blood pressure measure
arterial pressure during ventricular relaxtion
what are the two bones of the lower leg and which side do they each sit on?
Tibia (medial), Fibula (laterally)
what are the three muscle actions performed by the latissimus dorsi
extension, adduction, and medial rotation at the shoulder
what is autogenic inhibition and what proprioceptors are responsible
reflexive relaxation of agonist muscle due to tendon stretch; Golgi Tendon Organs
what is happening during the T-wave of an EKG
ventricular repolarization (relaxation)
what is the equation for cardiac output
Q = HR x SV