Human Anatomy and Physiology : Gross Anatomy

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

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Example Questions

Example Question #451 : Gross Anatomy

The head of the radius articulates with which bony prominence?

Possible Answers:

Capitellum of the humerus

Olecranon fossa of humerus

Scaphoid bone

Ulnar styloid process

Trochlea of humerus

Correct answer:

Capitellum of the humerus

Explanation:

The radiohumeral joint of the elbow is formed by the articulation between the head of the radius, and the capitellum of the humerus. While the trochlea of the humerus, and the olecranon fossa do form part of the elbow, they articulate with the ulna. The scaphoid does articulate with the raidius, but at the distal end of the bone.

Example Question #8 : Identifying Joints Of The Extremities

What kind of joint is the elbow?

Possible Answers:

Hinge

Saddle

Ball and socket

Gliding

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 #452 : Gross Anatomy

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:

Sternohumeral and glenohumeral

Acromioclavicular and sternohumeral

Sternoclavicular and acromioclavicular

Glenohumeral and acromioclavicular

Sternoclavicular and glenohumeral

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 #453 : Gross Anatomy

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

Possible Answers:

Coronoid process

Ulnar notch

Radial tuberosity 

Radial notch

Trochlear 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 #454 : Gross Anatomy

The zona orbicularis is found in which joint?

Possible Answers:

Sternoclavicular joint

Glenohumeral joint

Tibiofemoral 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 #455 : Gross Anatomy

What type of joint is the shoulder joint?

Possible Answers:

Saddle

Ball 

Ball and socket

Hinge

Fused

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 #456 : Gross Anatomy

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:

Rectus femoris

Piriformis

Obturator externus

Gluteus minimus

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:

Axillary nerve

Radial nerve

Recurrent branch of the median nerve

Median 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 #457 : Gross Anatomy

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

Possible Answers:

Ligaments . . . tendons

Ligaments . . . aponeuroses

Aponeuroses . . . tendons

Tendons . . . ligaments

Reticular tissues . . . tendons

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 #2 : Identifying Tendons And Ligaments

The lateral thickening of the fascia lata forms what?

Possible Answers:

Anterior rectus sheath

Popliteal fascia

Iliotibial (IT) band

Posterior rectus sheath

Crurial fascia of the leg

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. 

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