NCLEX : Musculoskeletal System and Anatomy

Study concepts, example questions & explanations for NCLEX

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Example Questions

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Example Question #1 : Joints

Which of the following is a term for movement along a sagittal plane that decreases the angle between bones?

Possible Answers:

Abduction

Flexion

Extension

Adduction

Correct answer:

Flexion

Explanation:

Movement along a sagittal plane that decreases the angle between bones is flexion. This is in contrast to extension, which is movement along a sagittal plane that increases the angle between bones. Adduction is movement that pulls a structure toward the midline of the body, while abduction moves a structure away from midline.

Example Question #1 : Joints

Which of the following joints is capable of circumduction?

Possible Answers:

The sacroiliac joint

The knee

The shoulder

The elbow

Correct answer:

The shoulder

Explanation:

Circumduction is movement that produces a circular motion wth the distal end of a body part. True circumduction allows for a 360 degree range of movement. Of the joints listed, the only one capable of circumduction is the shoulder. 

Example Question #1 : Joints

Which of the following is an example of a condyloid joint?

Possible Answers:

The metacarpophalangeal joints

The glenohumeral joint

The acromioclavicular joint

The humeroradial joint

Correct answer:

The metacarpophalangeal joints

Explanation:

Condyloid joints are a form of synovial joint in which a condyle rests in an ovoid cavity. Of the joints listed, the only condyloid joint is the metacarpophalangeal joints (the joint of the most proximal knuckle).

The acromioclavicular joint is a plane joint, while the glenohumeral and humeroradial joints are both ball and socket joints.

Example Question #1 : Joints

The patella articulates with which of the following bones?

Possible Answers:

The femur

The tibia

The fibula

The tibia and fibula

Correct answer:

The femur

Explanation:

The only bone that the patella, or kneecap, articulates with is the femur, at the patellofemoral joint. The patella is a sesamoid bone, meaning it is fully embedded within a tendon. The patellar ligament joins the patella to the tibial tuberosity (but not the fibula).

Example Question #71 : Musculoskeletal System And Anatomy

Which of the following are three structural classifications of joints?

Possible Answers:

Fibrous, cartilaginous, and synovial

Synarthrosis, ampiarthrosis, and diarthrosis

Condyloid, gliding, and hinge

Sutures, syndesmosis, gomphosis

Correct answer:

Fibrous, cartilaginous, and synovial

Explanation:

The structural classification of joints divides them according to the form of tissue that connects bones to each other. The three structural divisions of joints are fibrous, cartilaginous, and synovial. In contrast, synarthrosis, amphiarthrosis, and diarthrosis are all classifications of a joint's movement.

Condyloid, gliding, and hinge joints are all types of synovial joints, while sutures, syndesmosis, and gomphosis are all types of fibrous joints.

Example Question #2 : Joints

Gomphosis joints are fibrous joints found between the __________.

Possible Answers:

tibia and fibula

radius and the ulna

tooth and socket

skull bones

Correct answer:

tooth and socket

Explanation:

Gomphosis joints are fibrous joints that attach the root of the tooth to the bony socket of the mandible or maxilla. 

Both the tibio-fibular joint and the joint between the radius and ulna are syndesmoses, while the joints between the bones of the skull are sutures.

Example Question #71 : Musculoskeletal System And Anatomy

__________ joints make up the majority of the joints of the human body.

Possible Answers:

Cartilaginous 

Fibrous

Synovial

Synarthrosis

Amphiarthrosis

Correct answer:

Synovial

Explanation:

The majority of joints of the human body are synovial joints. These joints are diarthrotic and include a synovial joint capsule that allows for greater freedom of movement. Examples include the fingers and the elbows, the knees, the temporomandibular joint, and the hips. 

Fibrous and cartilagenous joints, all of which are either synarthrotic or amphiarthrotic, are relatively less common.

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