Lab Practical #1 Flashcards
Expiratory reserve volume
Maximal amount of air you can exhale after a normal exhalation
Vital capacity
Total volume of air that can be forcefully expelled from the lungs after a maximum inhalation
Inspiratory reserve volume
Maximum volume of air that can be inhaled in addition to rating tidal volume
Tidal volume
Volume of air moved in or out of the lungs during a respiratory cycle
Residual volume
Volume of air that remains in the lungs at all times
Total lung capacity
Total volume of air that lungs can hold
P wave indicates?
Depolarization of the atria
QRS indicates
The depolarization of ventricles
T wave indicates
Ventricular repolarization
Q-T interval
Length from the Q to the end of the T.. Indicates total length of time that ventricles are is systole
P-Q interval
Length from the beginning of the P wave to the beginning of e Q dip, indicates total length of time atria is in systole
Forced expiratory volume
Measures how fast air is expelled from the lung in 1 sec. Best indicator for health
Origin
The end of the muscle that is attached to an immovable end
Muscles can have more then one origin
Insertion
The end of the muscle that is attached to a moveable object
Generally there is only one insertion point for a muscle
Action
What the muscle does (what it moves and where)
Primary mover
The muscle that is mostly responsible for a particular action (does most of the work)
Synergist
Muscles that assist the primary mover in a particular action
Antagonist
Muscles that have opposite actions
Directions of muscle fibers
Rectus
Oblique
Transverse
Rectus
Parallel, straight
Oblique
Slanting, not a right angle
Transverse
Right angle
Relative size of muscles
Maximus
Longus
Minimus
Brevis
Maximus
Largest size
Longus
Long
Minimus
Smallest muscle
Brevis
Short
Frontalis
Overlays frontal bone
Abdominis
Overlays abdominal region
Origin of trapezius
Occipital bone and upper vertebrae (C7 to T12)
Insertion site for trapezius
Clavicle and scapula
Primary action of trapezius
Rotates and adducts scapula; extends and lat flexes head
Origin of the deltoid
Acromion process, clavicle
Insertion site of deltoid
Mid Humerus
Primary action of the deltoid
Abducts the arm
Origin of the latissimus Dorsi
Lower vertebrae (T7 -L5), sacrum
Insertion of the latissimus Dorsi
Proximal humerus
Primary action of the latissimus Dorsi
Adducts and extends the arm
Origin of the triceps brachii
Proximal humerus, scapula
Insertion site of the triceps brachii
Proximal ulna
Primary action of triceps brachii
Extends the elbow
Origin of the biceps brachii
Scapula
Insertion of biceps brachii
Proximal radius
Primary action of the biceps brachii
Flexes elbow
Origin of the brachialis
Mid humerus
Insertion site for brachialis
Proximal ulna
Primary action of brachialis
Flexes elbow
Origin of the extensor Capri radialis longus
Distal humerus
Insertion of the extensor Capri radialis longus
2nd metacarpal
Primary action of the extensor Capri radialis longus
Extends the wrist
Origin of extensor digitorium
Distal humerus
Insertion of the extensor digitorium
Posterior phalanges
Primary action of the extensor digitorium
Extends fingers
Origin of the brachioradialis
Distal humerus
Insertion site for brachioradialis
Distal radius
Primary action for brachioradialis
Flexes elbow