KINE 303 Exam 3 HW questions
movement of electrical impulses through the conducting system
1. SA node depolarizes and atrial activation begins 2. Depolarization spreads across the atrial surfaces and reaches the av node 3. Atrial contraction begins. The AV node delays the spread of electrical activity to the AV bundle by 100 msecs 4. Impulses travel along the AV bundle within the interventricular septum to the apex of the heart. Impulses also spread to the papillary muscles of the right ventricle by the moderator band 5. The impulse is distributed by the Purkinjie fibers and relayed throughout the ventricular myocardium. Atrial contraction is completed and the ventricular contraction begins.
What is the path blood takes through the body?
Blood travels from the right atrium to the right ventricle, which then pumps it into the pulmonary trunk, which leads to the pulmonary arteries.
With the hand near the shoulder, lower the hand back to anatomical position SLOWLY; Name the type of muscle contraction to control this movement:
Eccentric
Hyperextension of the elbow is limited by:
The Olecranon process
Name a muscle to move the little finger away from the palm.
abductor digiti minimi
Squeeze your fingers together, name the movement of the metacarpophalangeal joints.
adduction
Touch your thumb to your little finger. Name the movement of the 1st carpometacarpal joint.
adduction and flexion opposition
Name a muscle to squeeze the thumb to digit number 2.
adductior pollicis
Name the ligament that holds the head of radius to the ulna:
annular ligament
Name the proximal attachment of the flexor pollicis longus.
anterior shaft of radius & interosseus membrane
The loudest heart sound is due to the closing of the:
aortic and pulmonary valves
Name the distal attachment of the abductor pollicis longus.
base of the 1st metacarpal
Name the distal attachment of the extensor carpi radialis longus.
base of the 2nd metacarpal
From anatomical position, raise your hand to your shoulder. Name a muscle active to do this movement.
brachialis
What type of synovial joint is the wrist joint?
condyloid
The sternocleidomastoid causes:
contralateral rotation
Name the proximal attachment of the biceps brachii muscle:
coracoid process and supraglenoid tubercle
Name the nerve supply to the extensor indicis muscle.
deep radial nerve
Stick your thumb up in the air by itself,,, name the position of the 1st carpometacarpal joint.
extension
Name a muscle to do ulnar deviation with a concentric contraction.
extensor carpi ulnaris flexor carpi radialis flexor carpi ulnaris two of the above*
With your palm on the table, lift the 2nd digit as far as possible. name a muscle to do this movement.
extensor indicis
From anatomical position, raise your straight arm to the front until it is at shoulder height. Name the movement of the shoulder joint.
flexion
Name a muscle to control hyperextension of the wrist with an ECCENTRIC contraction.
flexor digitorum superficialis
Name a muscle to bring the thumb across the palm.
flexor pollicis longus
Name the shoulder joint surface on the scapula.
glenoid fossa
Name the fibrocartilage ring around the glenoid fossa.
glenoid labrum
What type of synovial joint is the elbow joint?
hinge
What is the movement of the wrist when the hand moves toward the back of the forearm?
hyperextension
More thoracic curve in the sagittal plane is known as:
kyphosis
Name the proximal attachment of the extensor digitorum muscle.
lateral epicondyle of humerus
Oxygenated blood returns to the heart from the lungs and enters the __________.
left atrium
Which chamber of the heart has the thickest myocardium?
left ventricle
Name the distal attachment of the subscapularis muscle:
lesser tubercle of humerus
Name the nerve supply of the flexor digitorum superficialis.
median nerve
Name the distal attachment of the flexor digitorum superficialis.
middle phalanges of digits 2-5
Name the type of synovial joint of the interphalangeal joints.
modified condyloid
Name the distal attachment of the triceps brachii muscle:
olecranon process of ulna
Squeeze your fingers together, name the muscle that does this movement.
palmar interossei
Which vessels bring blood to the heart?
pulmonary veins
Which of the heart's chambers is responsible for sending blood to the lungs to pick up oxygen?
right ventricle
Name the carpal bones that articulate at the wrist joint.
scaphoid, lunate, triangular
The inferior attachment of the rectus abdominis muscle:
superior surface of pubis body
Name the rotator cuff muscle commonly injured during throwing
supraspinatus
What is the purpose of the chordae tendineae?
to keep the atrioventricular valves shut during ventricular contraction
The valve found between the right atria and right ventricle is the:
tricuspid
The surface of the humerus that articulates with the ulna:
trochlea
A valgus load to the elbow joint would cause the following ligament to be stretched:
ulnar collateral ligament
The name of the nerve that is activated during the 'funny bone' sensation:
ulnar nerve
Name the distal attachment of the brachialis muscle:
ulnar tuberosity of coronoid process
which nerve causes the heart rate to decrease
vagus nerve