Human Anatomy and Physiology : Joints
Study concepts, example questions & explanations for Human Anatomy and Physiology
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Example Questions
Example Question #61 : Joints
Which ligament, when sprained, is associated with a separated shoulder?
Joint capsule
Sternoclavicular ligament (SC)
Deltoid ligament
Coracoclavicular ligament
Acromioclavicular ligament (AC)
Acromioclavicular ligament (AC)
The AC ligament is affected when a sprain occurs causing a "separated shoulder." This ligament connects the acromion to the clavicle.
Example Question #62 : Joints
In which joint would you find the ligament of Wrisberg?
Knee (tibiofemoral joint)
Shoulder (glenohumeral joint)
Hip (coxafemoral joint)
Ankle (talocrural joint)
Knee (tibiofemoral joint)
The ligament of Wrisberg is better known as the posterior meniscofemoral ligament. As the name suggests, it is found in the knee. It extends from the posterior horn of the lateral meniscus to the medial femoral condyle. Although its function is still being researched, current understanding suggests that the ligament stabilizes the meniscus to optimize contact between it and the femur.
Example Question #63 : Joints
During muscle contraction, which component(s) of the sarcomere shorten(s)?
The H-zone and I-band
The A-band only
The H-zone only
The A-band and H-zone
The I-band only
The H-zone only
Muscle contraction results in both the H-zone and I-bands shortening, but the A-band remains the same length (A band is Always the same). The Z-line is a static structure and doesn't change size.
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