Exam 2 LE

Which frequency is more likely to be used to examine deeper tissue via diagnostic ultrasound?

1 megahertz

What is the approximate rise and fall of person's center of gravity when walking?

5 cm

At initial contact, approximately how many degrees is the hip flexed during the running gait?

50 degrees

Which of the following must be used when performing diagnostic ultrasound?

A coupling medium

Which of the following must be used when performing a bone scan?

A radionuclide

A second-degree sprain is characterized by which of the following?

A soft but definite endpoint is present

Measuring the distance between which two landmarks is a common method of determining true leg length discrepancy?

ASIS and medial malleolus

What is the term for the point where the actin and myosin myofilaments overlap and maximum tension cannot be produced?

Active insufficiency

Which of the following would cause problems in a student who is using a backpack?

Backpack is carried in only one shoulder

Which of the following structures absorbs the most energy during radiographs?

Bone

Which imagine techniques uses x-rays detectors that rotate around the body to determine and quantify the presence of a specific pathology?

CT Scan

What is being described when one says a person walks 50 steps per minute?

Cadence

What a disorder is the result of a bacterial infection of the skin's connective tissue that is marked by edema, redness, and tightening of the skin?

Cellulitis

What is the point inside or outside the body where all things are equally balanced?

Center of gravity

What observational gait analysis finding is often made when an athlete has a hamstring strain or tight hamstring?

Excessive knee flexion at initial contact

Which of the following terms describes growth of extraneous bone that can occur as a stress reaction from injury of from irregular forces being placed on the bone?

Exostosis

During which period of the stance phase of gait should one demonstrate the greatest hip flexion angle?

Initial contact

When an agonist muscle becomes over activated, what is the effect if has on the antagonist muscle?

It becomes weaker

Which of the following is not a common cause of forward shoulder posture?

Lengthened anterior chest muscles

Which procedure can detect sprains or connective tissue damage involving loss of tissue continuity?

MRI

Which body type can be described as having an average body mass index and medium joint surfaces?

Mesomorph

What period of the stance phase begins as the body weight directly weight moves directly over the support limb and stationary foot, and concludes when the center of gravity is directly over the foot?

Midstance

What term describes a peripheral nerve injury in which there is a complete disruption of the nerve?

Neurotmesis

What is the term for the point where the length limits of musculotendinous unit are reached?

Passive insufficiency

When observing posture from the lateral side, which of the following structures is not one that should be on the plumb line?

Plumb line is posterior to the lateral femoral condyle

What is the term for the muscles that primarily function to support the body against the forces of gravity?

Postural

What effect would a decreased ability to dorsiflex have on the terminal stance phase of the gait cycle in the weight-bearing limb?

Premature heel raise

Which of the following changes will occur if a true length discrepancy is present?

Pronation on the long leg

Which of the following is the least invasive, least expensive, and most readily used method to determine bony involvement in an injury?

Radiograph

What is the term for the reflexive response of the antagonist muscle?

Reciprocal inhibition

Which of the following is defined as a portion of striated muscle fiber lying between two membranes?

Sarcomere

When looking at regional interdependence in weight-bearing, what patellar positon is associated with internal femoral rotation?

Squinting patellae

Which phase of gait is the longest?

Stance

When trying to rehabilitate the antagonist muscle when the agonist is over activated, which of the following is the first step in the rehabilitation?

Stretch the agonist

What is considered the functional unit of gait?

Stride

What is the position of the subtalar joint at heel strike?

Supination

What happens to the amount of time spent in the stance phase of gait during a running gait?

The amount of time decreases

An athlete presents to the athletic training room with hip pain. During you evaluation, you notice that the athlete has a positive Trendelenburg test on the right side. What compensatory gait pattern would you except to see if the athlete was placed on treadmill?

The left hip would drop during the right stance phase

The swing phase of gait cycle consists of how many distinct periods?

Three

Which of the following is not a cause for swayback posture?

Weak hamstrings