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usmle1week

Total questions: 41

Worksheet time: 23mins

Name
Class
Date
1.

A 10-year-old boy falls on his outstretched hand. X-ray shows a distal radius fracture with dorsal displacement. What is the name of this fracture?

a)

Smith fracture

b)

Colles fracture

c)

Monteggia fracture

d)

Galeazzi fracture

e)

Greenstick fracture

2.

Which bone articulates with the acetabulum?

a)

Femur

b)

Tibia

c)

Fibula

d)

Humerus

e)

Radius

3.

The epiphyseal plate is responsible for which of the following?

a)

Bone resorption

b)

Bone width increase

c)

Bone length growth

d)

Bone mineralization

e)

Bone remodeling

4.

Which joint allows the greatest range of motion?

a)

Hinge

b)

Pivot

c)

Saddle

d)

Ball-and-socket

e)

Plane

5.

The atlantoaxial joint allows which main movement?

a)

Flexion

b)

Extension

c)

Rotation

d)

Abduction

e)

Circumduction

6.

Which bone contains the coronoid process?

a)

Radius

b)

Ulna

c)

Scapula

d)

Clavicle

e)

Humerus

7.

The menisci of the knee are composed of:

a)

Hyaline cartilage

b)

Elastic cartilage

c)

Fibrocartilage

d)

Ligamentous tissue

e)

Synovial fluid

8.

Which joint connects the upper limb to the axial skeleton?

a)

Glenohumeral joint

b)

Sternoclavicular joint

c)

Acromioclavicular joint

d)

Costoclavicular joint

e)

Scapulothoracic joint

9.

Which bone forms the lateral malleolus?

a)

Tibia

b)

Fibula

c)

Talus

d)

Calcaneus

e)

Femur

10.

Which type of joint connects cranial bones in adults?

a)

Synchondrosis

b)

Syndesmosis

c)

Synostosis

d)

Synovial

e)

Symphysis

11.

Which muscle abducts the arm at the shoulder joint?

a)

Biceps brachii

b)

Deltoid

c)

Latissimus dorsi

d)

Pectoralis major

e)

Teres major

12.

The rectus femoris muscle belongs to which group?

a)

Hamstrings

b)

Quadriceps

c)

Adductors

d)

Gluteal muscles

e)

Calf muscles

13.

Which muscle is the main flexor of the forearm?

a)

Brachialis

b)

Biceps brachii

c)

Triceps brachii

d)

Pronator teres

e)

Brachioradialis

14.

The diaphragm is innervated by which nerve?

a)

Intercostal

b)

Phrenic

c)

Vagus

d)

Accessory

e)

Hypoglossal

15.

Which muscle forms the calf and inserts into the calcaneus?

a)

Soleus and gastrocnemius

b)

Tibialis anterior

c)

Fibularis longus

d)

Extensor digitorum

e)

Flexor hallucis longus

16.

What is the function of the serratus anterior muscle?

a)

Retracts the scapula

b)

Elevates the scapula

c)

Protracts and stabilizes scapula

d)

Rotates humerus medially

e)

Flexes the shoulder

17.

Damage to the long thoracic nerve results in:

a)

Winged scapula

b)

Drooping shoulder

c)

Loss of abduction

d)

Elbow flexion weakness

e)

Wrist drop

18.

Which muscle is responsible for flexion of the thigh at the hip?

a)

Gluteus maximus

b)

Iliopsoas

c)

Adductor magnus

d)

Sartorius

e)

Tensor fasciae latae

19.

The rotator cuff includes all except:

a)

Supraspinatus

b)

Infraspinatus

c)

Teres minor

d)

Teres major

e)

Subscapularis

20.

Which muscle allows dorsiflexion of the foot?

a)

Tibialis anterior

b)

Gastrocnemius

c)

Soleus

d)

Peroneus longus

e)

Tibialis posterior

21.

Which heart chamber forms the apex of the heart?

a)

Right atrium

b)

Left atrium

c)

Right ventricle

d)

Left ventricle

e)

Aortic root

22.

The sinoatrial (SA) node is located in which area?

4 lines
23.

The sinoatrial (SA) node is located in which area?

a)

Right atrial wall near SVC

b)

Left atrial appendage

c)

Interatrial septum

d)

Right ventricle

e)

Aortic arch

24.

Which vessel supplies oxygenated blood to the myocardium?

a)

Coronary arteries

b)

Pulmonary arteries

c)

Coronary veins

d)

Venae cavae

e)

Carotid arteries

25.

Which vein drains the majority of venous blood from the heart?

a)

Coronary sinus

b)

Great cardiac vein

c)

Middle cardiac vein

d)

Small cardiac vein

e)

Superior vena cava

26.

Which valve separates the right atrium and right ventricle?

a)

Mitral

b)

Pulmonary

c)

Tricuspid

d)

Aortic

e)

Eustachian

27.

The left coronary artery divides into which two major branches?

a)

RCA and LAD

b)

LAD and circumflex

c)

Marginal and posterior

d)

Septal and marginal

e)

Diagonal and posterior descending

28.

What structure prevents valve prolapse during ventricular contraction?

a)

Papillary muscles and chordae tendineae

b)

Trabeculae carneae

c)

Purkinje fibers

d)

Moderator band

e)

Crista terminalis

29.

The aortic arch gives rise to all of the following except:

a)

Brachiocephalic trunk

b)

Left common carotid artery

c)

Left subclavian artery

d)

Right subclavian artery

e)

None

30.

Which layer of the heart contains Purkinje fibers?

a)

Endocardium

b)

Myocardium

c)

Epicardium

d)

Pericardium

e)

Fibrous sac

31.

Occlusion of the left anterior descending artery affects which area?

a)

Posterior wall

b)

Lateral wall

c)

Anterior wall and septum

d)

Inferior wall

e)

Right atrium

32.

Which structure prevents food from entering the trachea during swallowing?

a)

Uvula

b)

Epiglottis

c)

Vocal cords

d)

Laryngeal inlet

e)

Soft palate

33.

The right lung differs from the left lung because it has:

a)

One fissure

b)

Two lobes

c)

Three lobes

d)

Lingula

e)

Cardiac notch

34.

Gas exchange occurs in which part of the respiratory system?

a)

Trachea

b)

Bronchi

c)

Bronchioles

d)

Alveoli

e)

Pleura

35.

The trachea bifurcates at which vertebral level?

a)

T2

b)

T3

c)

T4/T5

d)

T6

e)

T8

36.

Which muscle is the primary muscle of inspiration?

a)

External intercostals

b)

Diaphragm

c)

Sternocleidomastoid

d)

Internal intercostals

e)

Scalene muscles

37.

Which structure passes through the diaphragm at T8?

a)

Esophagus

b)

Inferior vena cava

c)

Aorta

d)

Thoracic duct

e)

Vagus nerve

38.

The pleural cavity lies between:

a)

Parietal and visceral pleura

b)

Pericardium and pleura

c)

Lung lobes

d)

Mediastinum and diaphragm

e)

Bronchioles and alveoli

39.

Which structure marks the beginning of the lower respiratory tract?

a)

Nasal cavity

b)

Pharynx

c)

Larynx

d)

Trachea

e)

Bronchi

40.

Which lung segment is most likely to develop aspiration pneumonia when lying down?

a)

Apical segment of upper lobe

b)

Posterior segment of upper lobe

c)

Anterior segment of lower lobe

d)

Medial segment of middle lobe

e)

Lateral segment of lower lobe

41.

The pulmonary ligament connects:

a)

Pleura to diaphragm

b)

Lung to mediastinum

c)

Pericardium to trachea

d)

Lobe to fissure

e)

Rib to vertebra

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