Chat Obj Questions `ch 7

OBJ 1

Which structure of the scapula articulates with the head of the humerus?

A. Acromion process

B. Glenoid cavity

C. Coracoid process

D. Supraspinous fossa

B

OBJ 1

Which of the following is NOT a carpal bone?

A. Scaphoid

B. Hamate

C. Triquetrum

D. Cuboid

D

OBJ 1

The radial groove of the humerus contains which structures?

A. Median nerve and brachial artery

B. Radial nerve and deep brachial artery

C. Ulnar nerve and ulnar artery

D. Axillary nerve and posterior circumflex artery

B

OBJ 1

Which structure of the scapula provides an attachment site for the long head of the triceps brachii?

A. Supraglenoid tubercle

B. Infraglenoid tubercle

C. Coracoid process

D. Acromion

B

OBJ 1

The bicipital groove is located between which two structures?

A. Medial and lateral epicondyles

B. Greater and lesser tubercles

C. Capitulum and trochlea

D. Anatomical and surgical necks

B

OBJ 1

Which bone directly articulates with the capitulum of the humerus?

A. Ulna

B. Scaphoid

C. Radius

D. Clavicle

C

OBJ 1

Which statement about the bones of the hand is FALSE?

A. The thumb lacks a middle phalanx

B. There are eight carpal bones

C. The pisiform articulates with the triquetrum

D. The hamate is in the proximal carpal row

D

OBJ 1

The clavicle articulates medially with the ____ and laterally with the ____.

A. Acromion; manubrium

B. Manubrium; acromion

C. Coracoid; sternum

D. Glenoid; first rib

B

OBJ 1

Which structure is located on the posterior surface of the scapula?

A. Subscapular fossa

B. Scapular spine

C. Coracoid process only

D. Glenoid cavity only

B

OBJ 1

The radial styloid process is located on the ____ aspect of the wrist.

A. Medial

B. Palmar midline

C. Posterior midline

D. Lateral

D

OBJ 2

Which muscle is NOT part of the rotator cuff?

A. Supraspinatus

B. Infraspinatus

C. Teres major

D. Teres minor

C

OBJ 2

Which muscle is located in the intermediate layer of the anterior forearm?

A. Flexor digitorum superficialis

B. Pronator teres

C. Pronator quadratus

D. Flexor pollicis longus

A

OBJ 2

Which of the following belongs to the deep anterior forearm?

A. Palmaris longus

B. Flexor carpi radialis

C. Pronator quadratus

D. Extensor digitorum

C

OBJ 2

Which muscle is found in the posterior compartment of the arm?

A. Biceps brachii

B. Coracobrachialis

C. Brachialis

D. Triceps brachii

D

OBJ 2

Which muscle is located in the hypothenar region?

A. Abductor pollicis brevis

B. Opponens digiti minimi

C. Adductor pollicis

D. Flexor pollicis longus

B

OBJ 2

Which muscle inserts onto the radial tuberosity?

A. Brachialis

B. Biceps brachii

C. Triceps brachii

D. Anconeus

B

OBJ 2

Which muscle is associated with the thenar region?

A. Opponens pollicis

B. Abductor digiti minimi

C. Extensor indicis

D. Pronator teres

A

OBJ 2

Which muscle is NOT in the superficial anterior forearm group?

A. Palmaris longus

B. Pronator teres

C. Flexor carpi ulnaris

D. Flexor digitorum profundus

D

OBJ 2

The muscle located deep to the long and lateral heads of the triceps is the ____.

A. Short head

B. Medial head

C. Superior head

D. Anterior head

B

OBJ 2

Which muscle is the most laterally positioned muscle of the forearm?

A. Flexor carpi ulnaris

B. Pronator quadratus

C. Brachioradialis

D. Flexor digitorum superficialis

C

OBJ 3

Which muscle initiates approximately the first 10 degrees of shoulder abduction?

A. Supraspinatus

B. Deltoid

C. Teres major

D. Pectoralis minor

A

OBJ 3

Which nerve innervates the deltoid muscle?

A. Radial

B. Median

C. Musculocutaneous

D. Axillary

D

OBJ 3

The serratus anterior is innervated by the ____.

A. Long thoracic nerve

B. Suprascapular nerve

C. Axillary nerve

D. Thoracodorsal nerve

A

OBJ 3

Which muscle is the chief flexor of the forearm at the elbow?

A. Triceps brachii

B. Brachialis

C. Anconeus

D. Extensor carpi radialis

B

OBJ 3

Which muscle is responsible for flexion at the distal interphalangeal joints of digits 2–5?

A. Flexor digitorum superficialis

B. Palmaris longus

C. Extensor digitorum

D. Flexor digitorum profundus

D

OBJ 3

Which muscle is NOT innervated by the median nerve?

A. Pronator teres

B. Flexor carpi radialis

C. Flexor carpi ulnaris

D. Flexor pollicis longus

C

OBJ 3

The posterior forearm compartment is innervated by which nerve?

A. Ulnar

B. Median

C. Radial

D. Axillary

C

OBJ 3

Which muscle extends the index finger and provides additional extension strength?

A. Extensor indicis

B. Extensor digiti minimi

C. Flexor digitorum profundus

D. Abductor pollicis longus

A

OBJ 3

The superficial palmar arterial arch is supplied primarily by the ____.

A. Ulnar artery

B. Radial artery

C. Deep brachial artery

D. Axillary artery

A

OBJ 3

Which vessel is commonly punctured for blood draws in the cubital fossa?

A. Basilic artery

B. Median cubital vein

C. Deep brachial vein

D. Posterior circumflex artery

B

OBJ 3

The interossei muscles ____ the MCP joints and ____ the IP joints.

A. Extend; flex

B. Extend; extend

C. Flex; flex

D. Flex; extend

D

OBJ 3

The palmar interossei primarily ____ the digits, while the dorsal interossei primarily ____ the digits.

A. Abduct; adduct

B. Adduct; abduct

C. Flex; extend

D. Extend; flex

B

OBJ 4

The brachial plexus originates from which spinal nerve roots?

A. C1–C5

B. C7–T5

C. C5–T1

D. T1–T5

C

OBJ 4

What is the correct sequence of brachial plexus organization?

A. Roots, trunks, divisions, cords, branches

B. Roots, cords, trunks, divisions, branches

C. Trunks, roots, cords, divisions, branches

D. Roots, divisions, trunks, branches, cords

A

OBJ 4

The superior trunk forms from which roots?

A. C5 and C6

B. C7 and C8

C. C8 and T1

D. C6 and C7

A

OBJ 4

Which root continues to form the middle trunk?

A. C5

B. C6

C. C7

D. T1

C

OBJ 4

All three posterior divisions combine to form the ____.

A. Medial cord

B. Lateral cord

C. Posterior cord

D. Superior trunk

C

OBJ 4

Which two terminal nerves arise from the posterior cord?

A. Median and ulnar

B. Axillary and radial

C. Musculocutaneous and median

D. Ulnar and radial

B

OBJ 4

The median nerve receives fibers from which cords?

A. Posterior only

B. Medial and lateral

C. Lateral and posterior

D. Medial and posterior

B

OBJ 4

Which nerve arises directly from the C5 root?

A. Dorsal scapular nerve

B. Ulnar nerve

C. Radial nerve

D. Median nerve

A

OBJ 4

The long thoracic nerve receives contributions from ____.

A. C5–C7

B. C8–T1

C. C5–C6 only

D. C7–T1

A

OBJ 4

Which terminal branch continues from the lateral cord?

A. Ulnar

B. Axillary

C. Musculocutaneous

D. Radial

C

OBJ 5

Loss of sensation over the lateral forearm is most associated with injury to the ____.

A. Ulnar nerve

B. Musculocutaneous nerve

C. Axillary nerve

D. Median nerve

B

OBJ 5

Which nerve supplies the shoulder/axillary skin region described in the lecture?

A. Axillary

B. Ulnar

C. Median

D. Musculocutaneous

A

OBJ 5

The medial/ulnar aspect of the hand is primarily associated with which peripheral nerve?

A. Radial

B. Median

C. Axillary

D. Ulnar

D

OBJ 5

The lateral palm and digits are primarily associated with the ____.

A. Ulnar nerve

B. Median nerve

C. Axillary nerve

D. Long thoracic nerve

B

OBJ 5

Which nerve supplies much of the posterior arm and dorsal lateral hand, excluding the distal digits?

A. Musculocutaneous

B. Radial

C. Median

D. Ulnar

B

OBJ 5

According to the lecture, the radial nerve contains fibers from which spinal levels?

A. C5–T1

B. C8–T1 only

C. C5–C6 only

D. T1–T5

A

OBJ 6

With a proximal median nerve injury, which finding is expected when attempting to make a fist?

A. The fourth and fifth digits remain curled

B. There is isolated wrist-drop

C. The thumb, index, and middle fingers fail to flex fully

D. All fingers become completely paralyzed

C

OBJ 6

An injury to the radial nerve in the radial groove produces ____.

A. Claw hand without wrist weakness

B. Wrist-drop with preserved triceps elbow extension

C. Loss of all elbow extension and shoulder abduction

D. Ape hand

B

OBJ 6

A patient has a winged scapula after a mastectomy. Which nerve was most likely damaged?

A. Axillary

B. Long thoracic

C. Radial

D. Musculocutaneous

B

OBJ 6

Which injury is most associated with Erb-Duchenne paralysis?

A. Upper brachial plexus injury

B. Lower brachial plexus injury

C. Median nerve injury at wrist

D. Radial nerve injury in forearm

A

OBJ 6

A patient presents with hyperextended MCP joints and flexed IP joints of the fourth and fifth digits. Which nerve is likely injured?

A. Radial

B. Median

C. Ulnar

D. Axillary

C

OBJ 6

A fracture of the surgical neck of the humerus most directly endangers which nerve?

A. Ulnar

B. Median

C. Axillary

D. Musculocutaneous

C

OBJ 6

A fracture of the medial epicondyle of the humerus most directly endangers which nerve?

A. Radial

B. Ulnar

C. Axillary

D. Median

B

OBJ 6

Which carpal bone is most commonly fractured following a fall on an outstretched hand?

A. Lunate

B. Scaphoid

C. Pisiform

D. Hamate

B

OBJ 6

Carpal tunnel syndrome involves compression of which nerve?

A. Ulnar

B. Radial

C. Median

D. Axillary

C

OBJ 6

Nursemaid's elbow involves displacement associated with which structure?

A. Ulnar collateral ligament

B. Annular ligament around the radial head

C. Flexor retinaculum

D. Rotator cuff

B

OBJ 6

Which carpal bone is most frequently dislocated?

A. Scaphoid

B. Trapezium

C. Lunate

D. Pisiform

C

OBJ 6

With an ulnar nerve injury at the elbow, the claw may appear less pronounced than with injury at the wrist because ____.

A. The median nerve compensates

B. Additional FDP paralysis reduces finger flexion

C. The interossei remain intact

D. The radial nerve becomes hyperactive

B

True or False — All six objectives

The radius crosses over the ulna during pronation.

A. True

B. False

True

True or False — All six objectives

The subscapularis inserts on the greater tubercle of the humerus.

A. True

B. False

False

True or False — All six objectives

The rotator cuff muscles help stabilize the glenohumeral joint.

A. True

B. False

True

True or False — All six objectives

The flexor digitorum superficialis inserts onto the distal phalanges.

A. True

B. False

False

True or False — All six objectives

The ulnar nerve innervates flexor carpi ulnaris.

A. True

B. False

A

True or False — All six objectives

The dorsal interossei adduct the digits toward digit three.

A. True

B. False

False

True or False — All six objectives

The median nerve is one of the five terminal branches of the brachial plexus.

A. True

B. False

False

True or False — All six objectives

The inferior trunk of the brachial plexus is formed by C8 and T1.

A. True

B. False

True

True or False — All six objectives

The median nerve supplies the medial/ulnar side of the hand.

A. True

B. False

False

True or False — All six objectives

The axillary nerve supplies the shoulder region.

A. True

B. False

True

True or False — All six objectives

A median nerve injury above the elbow can cause hand of benediction.

A. True

B. False

True

True or False — All six objectives

A radial nerve injury in the radial groove always eliminates triceps elbow extension.

A. True

B. False

False

True or False — All six objectives

A scaphoid waist fracture may result in avascular necrosis.

A. True

B. False

True

True or False — All six objectives

The long thoracic nerve injury can prevent arm elevation beyond approximately 90 degrees.

A. True

B. False

True

True or False — All six objectives

The flexor retinaculum forms the floor of the carpal tunnel.

A. True

B. False

False

True or False — All six objectives

The median cubital vein is a common site for venipuncture.

A. True

B. False

True

True or False — All six objectives

The ulna directly articulates with the scaphoid and lunate.

A. True

B. False

False

True or False — All six objectives

The superficial palmar arch is supplied mostly by the ulnar artery.

A. True

B. False

True

True or False — All six objectives

Klumpke's paralysis is associated with lower brachial plexus injury.

A. True

B. False

True

True or False — All six objectives

A shoulder separation and a glenohumeral dislocation are the same injury.

A. True

B. False

False

Labeling practice — Bones, muscles, nerves

A posterior scapula diagram points to the large depression below the scapular spine. Identify it.

A. Subscapular fossa

B. Supraspinous fossa

C. Infraspinous fossa

D. Glenoid cavity

C

Labeling practice — Bones, muscles, nerves

A proximal humerus diagram points to the narrow region distal to the tubercles. Identify it.

A. Anatomical neck

B. Surgical neck

C. Radial groove

D. Deltoid tuberosity

B

Labeling practice — Bones, muscles, nerves

A distal humerus diagram points to the rounded lateral articular surface. Identify it.

A. Trochlea

B. Capitulum

C. Olecranon fossa

D. Medial epicondyle

B

Labeling practice — Bones, muscles, nerves

A proximal ulna diagram points to the large posterior projection forming the point of the elbow.

A. Coronoid process

B. Radial notch

C. Olecranon process

D. Styloid process

C

Labeling practice — Bones, muscles, nerves

A palmar hand diagram points to the carpal at the base of the thumb.

A. Trapezium

B. Hamate

C. Pisiform

D. Triquetrum

A

Labeling practice — Bones, muscles, nerves

A posterior shoulder diagram points to the muscle above the scapular spine.

A. Infraspinatus

B. Supraspinatus

C. Subscapularis

D. Teres major

B

Labeling practice — Bones, muscles, nerves

A deep anterior forearm diagram points to a square-shaped distal muscle connecting radius and ulna.

A. Pronator teres

B. Pronator quadratus

C. Supinator

D. Palmaris longus

B

Labeling practice — Bones, muscles, nerves

A posterior forearm diagram points to the tendon extending toward the index finger.

A. Extensor indicis

B. Extensor digiti minimi

C. Flexor digitorum superficialis

D. Palmaris longus

A

Labeling practice — Bones, muscles, nerves

A palmar hand diagram points to the muscles between the metacarpals.

A. Thenar muscles

B. Hypothenar muscles

C. Interossei

D. Pronators

C

Labeling practice — Bones, muscles, nerves

A brachial plexus diagram points to the cord formed by all posterior divisions.

A. Lateral cord

B. Medial cord

C. Posterior cord

D. Inferior trunk

C