The major duodenal papilla lies in （）.

单项选择题The right coronary artery （）.

A．supplies most of the interventricular septum
B．divides into anterior interventricular branch and circumflex branch
C．runs between the pulmonary trunk and the left auricle
D．supplies posterior 1/3 of interventricular septum,
E．supplies lesser portion of anterior wall of right ventricle

单项选择题Which one of the following isn’t located in the superior mediastinum ？（）

A．trachea
B．superior vena cava
C．brachiocephalic v.
D．vagus n.
E．greater splanchnic n.

单项选择题The right lymphatic duct （）.

A．arises from the cisterna chyli at the level of 12th lumbar vertebra
B．passes through the esophageal hiatus
C．accompanies the aorta all the way
D．collects lymph only from the left half of the body
E．drains into the right venous angle

单项选择题Which one is WRONG about the pericardium （）.

A．It is located in the middle mediastinum
B．It can be divided into fibrous and serous pericardium
C．It encloses the heart
D．It forms a closed cavity called pericardial cavity
E．It attaches to the visceral pleura

单项选择题The coronary sinus opens into （）.

A．right atrium
B．superior vena cava
C．inferior vena cava
D．right ventricle
E．left atrium

单项选择题The fossa ovalis is （）.

A．a foramen between the right atrium and the left one
B． existent during the fetus
C．located on the lower part of the right surface of the interatrial septum
D．the thickest part of the wall of the heart
E．a remnant of the fetal heart between the atrium and ventricle

单项选择题The narrowest part of the laryngeal cavity is （）.

A．the aperture of larynx
B．the rima vestibuli
C．the intermedial cavity of larynx
D．the fissure of glottis
E．the infraglottic cavity

单项选择题The maxillary sinuses open into （）.

A．the nasal vestibule
B．the sphenoethmoidal recess
C．the superior nasal meatus
D．the middle nasal meatus
E．the inferior nasal meatus

单项选择题Which nerve injured can lead to “claw hand”(爪形手) （）.

A．musculocutaneous nerve
B．median nerve
C．ulnar nerve
D．axillary nerve
E．radial nerve

单项选择题The apex of axilla is bounded by （）.

A．lateral 1/3 of clavicle
B．medial border of scapula
C．lateral border of first rib
D．head of humerus
E． pectoralis major