Human Anatomy and Physiology : Joints

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #9 : Identifying Joints Of The Extremities

What kind of joint is the elbow?

Possible Answers:

Gliding

Ball and socket

Hinge

Saddle

Correct answer:

Hinge

Explanation:

The elbow is a hinge joint, as it is only about to move in one plane of motion. The thumb is a saddle joint as it can move in multiple directions. The bones of the wrist are gliding joints as they are two flat surfaces moving over each other. Lastly, the shoulder is an example of ball and socket as it has a very wide range of motion.

Example Question #1 : Identifying Joints Of The Extremities

Which of the following two shoulder joints work together to combine movements to allow for an increase in "reach" of the upper limb?

Possible Answers:

Sternoclavicular and glenohumeral

Sternohumeral and glenohumeral

Sternoclavicular and acromioclavicular

Glenohumeral and acromioclavicular

Acromioclavicular and sternohumeral

Correct answer:

Sternoclavicular and acromioclavicular

Explanation:

The sternoclavicular and acromioclavicular joints link two bones of the pectoral girdle to each other and to the trunk of the body. They also combine their movements to increase reach length of the upper limb. They are both synovial joints and surrounded by a joint capsule with numerous ligaments to reinforce their movements. The glenohumeral joint serves in articulation of the humerus and scapula. The Sternohumeral joint does not exist.

Example Question #41 : Joints

Which of the following articulates with the radial head of the radius?

Possible Answers:

Trochlear notch

Radial tuberosity 

Coronoid process

Ulnar notch

Radial notch

Correct answer:

Radial notch

Explanation:

Radial head articulates with the radial notch. The head of the ulna articulates with the ulnar notch. The trochlear notch articulates with trochlea of the humerus. The radial tuberosity is the attachment site for the long head of the biceps. 

Example Question #42 : Joints

The zona orbicularis is found in which joint?

Possible Answers:

Sternoclavicular joint

Tibiofemoral joint

Glenohumeral joint

Acetabulofemoral joint

Correct answer:

Acetabulofemoral joint

Explanation:

The zona orbicularis is a portion of the joint capsule of the acetabulofemoral (hip) joint. It is thought to resist distraction (pulling out) of the femur. Additionally, it is believed to help circulate synovial fluid in the joint. As you may recall, synovial fluid helps lubricate joints and provides nutrition to their articular cartilage.

Example Question #43 : Joints

What type of joint is the shoulder joint?

Possible Answers:

Saddle

Ball and socket

Fused

Hinge

Ball 

Correct answer:

Ball and socket

Explanation:

The shoulder, similar to the hip is formed by a ball-and-socket joint. The ball is created by the head of the humerus, while the socket is created by the glenoid cavity. This creates a smaller, less stable version of the ball-and-socket joint in the hip

Example Question #44 : Joints

The deep lateral rotators of the hip are sometimes called the rotator cuff of the hip. Despite this name, not all of the deep lateral rotators attach to the hip joint capsule, and not all the muscles that attach to the joint capsule laterally rotate the hip. Which muscles do not attach to the hip joint capsule?

Possible Answers:

Piriformis

Rectus femoris

Gluteus minimus

Obturator externus

Correct answer:

Piriformis

Explanation:

The rectus femoris, specifically the reflected head, attaches to the anterosuperior portion of the hip capsule. The gluteus minimus attaches to the superolateral portion of the capsule. Although its contribution to the capsule is relatively small, the obturator externus attaches to the posteroinferior joint capsule. Despite contributing to dynamic hip stability by eccentrically controlling hip internal rotation, the piriformis does not attach to the hip's joint capsule.

Example Question #1 : Identifying Tendons And Ligaments

What nerve is compressed in carpal tunnel syndrome?

Possible Answers:

Recurrent branch of the median nerve

Radial nerve

Median nerve

Axillary nerve

Ulnar nerve

Correct answer:

Median nerve

Explanation:

The median nerve enters the hand through the carpal tunnel with the tendons of the flexor digitorum superficialis, felxor digitorum profundus, and flexor pollicus longus. Carpal tunnel syndrome occurs when the median nerve becomes compressed within the carpal tunnel. Compression of the nerve results in tingling and numbness in the fingers.

Example Question #456 : Gross Anatomy

__________ attach skeletal muscles to bones, and __________ connect one bone to another. 

Possible Answers:

Reticular tissues . . . tendons

Tendons . . . ligaments

Ligaments . . . tendons

Aponeuroses . . . tendons

Ligaments . . . aponeuroses

Correct answer:

Tendons . . . ligaments

Explanation:

Tendons always connect muscles to bones, and ligaments always connect bones to bones. Reticular tissues are connective tissue that are found around the liver, kidneys, and other organs. Aponeuroses are connective tissue that primarily binds muscle to muscle.

Example Question #457 : Gross Anatomy

The lateral thickening of the fascia lata forms what?

Possible Answers:

Posterior rectus sheath

Crurial fascia of the leg

Anterior rectus sheath

Iliotibial (IT) band

Popliteal fascia

Correct answer:

Iliotibial (IT) band

Explanation:

The fascia lata of the thigh thickens laterally to form the iliotibial (IT) band. The crurial fascia of the leg is found below the knee. The anterior and posterior rectus sheaths are found in the abdominal region. The popliteal fascia is found on the posterior side of the knee. 

Example Question #461 : Gross Anatomy

Which of the following structures is not found in the knee?

Possible Answers:

Glenohumeral ligament

Medial collateral ligament

Anterior cruciate ligament

Lateral meniscus

Posterior cruciate ligament

Correct answer:

Glenohumeral ligament

Explanation:

The glenohumeral ligaments are not found in the knee. The superior, inferior, and medial glenohumeral ligaments are found in the shoulder and play a role in stabilizing the glenohumeral joint, which connects the humerus and the glenoid fossa of the scapula.

The anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL), and lateral meniscus are all structures found in the knee.

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