Which is true about prostate （）.

单项选择题which artery is NOT the branch of external carotid artery （）.

A．superior thyroid a.
B．lingual a
C．facial a.
D．maxillary a.
E．vertebral a.

单项选择题About the spleen, the right description is （）.

A．it is situated in the left lower part of thoracic cavity
B．its long axis is in the line of the 10th rib
C．it is palpable below the left costal arch
D．there are splenic notches on its anterior extremity
E．the hilum of spleen lies on the diaphragmatic surface

单项选择题The following structure is located in the carotid sheath （）.

A．sympathetic trunk
B．vertebral artery
C．glossopharyngeal n.
D．internal jugular vein
E．external jugular vein

单项选择题The following nerves which should be avoided to be injured when we want to ligate （结扎）inferior thyroid a （）.

A．the trunk of vagus
B．inferior laryngeal nerve
C．the lateral branch of superior laryngeal nerve
D．the trunk of sympathetic n.
E．recurrent laryngeal nerve

单项选择题The trigone of bladder lies （）.

A．in internal surface of fundus of bladder
B．below apex of urinary bladder
C．in the body of bladder
D．below neck of bladder
E．in base of prostate

单项选择题From the anterior wall of rectum, we can palpate the following structures, EXCEPT （）.

A．prostate
B．apex of urinary bladder
C．ampulla of ducts deference
D．neck of uterus
E．seminal vesicle

单项选择题Which structure doesn’t belong to stomach （）.

A．angular notch
B．pyloric antrum
C．bed of stomach
D．pyloric canal
E．cardia

单项选择题Which nerve does come from lumbar plexus （）.

A．sciatic nerve
B．inferior gluteal nerve
C．obturator nerve
D．pudendal nerve
E．median nerve

单项选择题The following veins are the tributaries of inferior vena caval, EXCEPT （）.

A．hepatic vein
B．renal vein
C．left common iliac vein
D．right testicular vein
E．hepatic portal vein

单项选择题The second constriction of ureter lies at （）.

A．prostatic portion of urethra
B．membranous part of urethra
C．where it crosses superior aperture of lesser pelvis
D．where it pierces into the unrinary bladder
E．internal urethral orifice