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