Human Anatomy and Physiology : Identifying Muscles of the Upper Extremities
Study concepts, example questions & explanations for Human Anatomy and Physiology
All Human Anatomy and Physiology Resources
Example Questions
Example Question #31 : Identifying Muscles Of The Upper Extremities
Which muscle are the primary movers for shoulder extension and elbow extension?
Biceps brachii
Posterior head of deltoid
Latissimus dorsi
Triceps brachii
Pectoralis major
Triceps brachii
The triceps brachii is the only muscle that performs both elbow extension and shoulder extension. The latissimus dorsi does allow for shoulder extension, however does not include the elbow.
Example Question #145 : Muscles
Which muscle's only action is to pronate the forearm?
Supinator
Tensor fascia latae
Anconeus
Brachioradialis
Pronator quadratus
Pronator quadratus
The pronator quadratus's only action is pronation of the forearm.
Example Question #33 : Identifying Muscles Of The Upper Extremities
Which muscles sole action is to supinate the forearm?
Pronator quadratus
Brachialis
Extensor digitorum brevis
Supinator
Palmaris longus
Supinator
The supinator does just what is says, supinates the forearm.
Example Question #32 : Identifying Muscles Of The Upper Extremities
The extensor carpi ulnaris muscle __________.
adducts and abducts the hand at the wrist joint
is part of the flexor group of muscles of the forearm
only extends the wrist joint
extends and adducts the hand at the wrist joint
extends and abducts the hand at the wrist joint
extends and adducts the hand at the wrist joint
The extensor carpi ulnaris muscle functions as an extensor and adductor of the hand at the wrist joint. It is part of the extensor group of muscles of the forearm and originates from the lateral epicondyle of the humerus and posterior border of the ulna. It inserts into the fifth metacarpal.
Example Question #33 : Identifying Muscles Of The Upper Extremities
Large muscles of the upper extremity __________.
would not include the deltoid
would not include muscles that move the upper arm
always have the same directional fibers and actions
can have various directional fibers having different actions
always have one action on one structure
can have various directional fibers having different actions
Large muscles of the upper extremity would include muscles that move the upper arm and may have various directional fibers having different actions. An example of such a muscle is the deltoid; its lateral fibers abduct the arm at the shoulder joint, the anterior fibers flex and medially rotate the arm, and the posterior fibers flex and laterally rotate the arm.
Example Question #34 : Identifying Muscles Of The Upper Extremities
Which answer choice correctly states the number of each type of vertebrae?
7 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 4 coccygeal
12 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 4 coccygeal
7 cervical, 5 thoracic, 4 lumbar, 5 sacral, and 12 coccygeal
12 cervical, 7 thoracic, 5 lumbar, 4 sacral, and 5 coccygeal
4 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 7 coccygeal
7 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 4 coccygeal
The human vertebral column consists of 33 vertebrae. The lumbar vertebrae at the base of the spine are thickest and bear most of the weight of the trunk. The bottom 5 sacral vertebrae and 4 coccygeal vertebrae are fused. Both sets of fused vertebrae comprise two different bones, the sacrum and the coccyx respectively. The 12 thoracic vertebrae contain facets on the bodies and on the transverse processes (except T11 and T12) for articulation with the ribs.
Example Question #151 : Muscles
Which make up the wrist and the body of the hand?
tarsals and phalanges
carpals and metacarpals
carpals and phalanges
tarsals and metatarsals
carpals and metacarpals
The carpals and metacarpals make up the wrist and the body of the hand, respectively. The tarsals and metatarsals make up the ankle and the body of the foot, respectively. The phalanges are the bones of the fingers and toes.
Example Question #35 : Identifying Muscles Of The Upper Extremities
If the efferent arteriole becomes constricted, what is likely to occur in the nephron?
Glomerular filtration rate will decrease due to a loss in blood pressure
Glomerular filtration rate will remain the same
Fluid backup will cause the nephron to rupture
The increased hydrostatic pressure will elevate glomerular filtration rate
The increased osmotic pressure will elevate glomerular filtration rate
The increased hydrostatic pressure will elevate glomerular filtration rate
The efferent arteriole carries blood away from the glomerulus, and so if it is constricted, the blood pressure behind it will increase. The raise in blood pressure will result in an increase in hydrostatic pressure, pushing additional fluid through the glomerulus i.e elevated glomerular filtration rate. While high hydrostatic pressure does cause damage to the nephron, the nephron rupturing is too extreme of a statement and requires assumptions that are not necessarily valid.
All Human Anatomy and Physiology Resources
