Which part of the ventricular system contains choroid plexus?

Which one of the following tumors contains cellular whorls and psammoma bodies?

A 50-year-old hypertensive woman complains of numbness and weakness in her left leg and foot. Occlusion of which of the following vessels may account for this complaint?

A 15-year-old boy is hit on the temple with a baseball and becomes unconscious. After about 10 minutes, he regains consciousness, but he soon becomes lethargic, and over the next 2 hours, he becomes stuporous. His pupils are unequal. Intracranial hemorrhage is suspected. Which of the following vessels is most likely to be the source of the hemorrhage?

An elderly woman fell at home and fractured the greater trochanter of her femur. Which of the following muscles would continue to function normally?

A 78-year-old man has carcinoma of the rectum. The cancer is likely to metastasize via the veins into which of the following structures?

A 14-year-old gymnastics silver medalist falls from the uneven bars and complains of pain in the knee and ankle joints. On physical examination, her physician found that the muscle responsible for flexing the leg at the knee joint and plantar flexing the foot is severely weakened. Which of the following muscles involved in both movements was most likely damaged in this accident?

The neural retina is derived from the

An obstetrician is about to perform a pudendal block so that a woman can experience less pain when she delivers her child. He recalls what he learned in medical school about this nerve. Which of the following statements is correct?

A 21-year-old tennis player comes to an emergency room and complains of pain in the knee joint. On examination, he has an infection inside the knee joint capsule but outside the synovial cavity. Which of the following structures is preserved from this infection?

While playing football, a 19-year-old college student receives a twisting injury to his knee when being tackled from the lateral side. Which of the following conditions most likely has occurred?

A 10-year-old boy has severed his radial nerve. Which of the following cells plays a major role in axonal regrowth?

The obturator nerve and the sciatic (tibial portion) nerve of a 15-year-old boy are transected as a result of a motorcycle accident. This injury would result in complete paralysis of which of the following muscles?

A 46-year-old female nurse complains of right-sided hearing loss and vertigo (dizziness). A small tumor was demonstrated within the internal auditory canal. Which structure listed below accounts for the hearing loss and vertigo?

A patient with a deep knife wound in the buttock walks with a waddling gait that is characterized by the pelvis falling toward one side at each step. Which of the following nerves is damaged?

Which of the following reflexes is monosynaptic?

A 17-year-old boy was stabbed during a gang fight, resulting in the transection of the obturator nerve. Which of the following muscles is completely paralyzed?

Which spinal nerve rami contain unmyelinated postganglionic sympathetic nerve fibers?

A 41-year-old man was involved in a fight and felt weakness in extending the knee joint. On examination, he was diagnosed with a lesion of the femoral nerve. Which of the following symptoms would be a result of this nerve damage?

The ability to recognize an unseen familiar object placed in the hand depends on the integrity of which pathway?

A 20-year-old patient cannot flex and medially rotate the thigh while running and climbing. Which of the following muscles is most likely damaged?

The sensation produced by a wisp of cotton on one’s fingertip is mediated by the

A 50-year-old woman complains of clumsiness in her hands while working in the kitchen; she recently burned her hands on the stove without experiencing any pain. Neurologic examination reveals bilateral weakness of the shoulder girdles, arms, and hands, as well as a loss of pain and temperature sensation covering the shoulder and upper extremity in a cape-like distribution. Severe atrophy is present in the intrinsic muscles of the hands. The most likely diagnosis is

A knife wound penetrates the superficial vein that terminates in the popliteal vein. Bleeding occurs from which of the following vessels?

Transection of the spinothalamic tract results in

Clasp-knife spasticity results from a lesion in the

Which of the following syndromes is associated with an absent Achilles tendon reflex?

An example of a peripheral nervous system lesion is

A 28-year-old basketball player falls while rebounding and is unable to run and jump. On physical examination, he has pain and weakness when extending his thigh and flexing his leg. Which muscle involved in both movements is most likely injured?

An elderly man with a benign enlargement of his prostate experiences difficulty in urination, urinary frequency, and urgency. Which of the following is commonly involved in benign hypertrophy that obstructs the prostatic urethra?

The cerebral aqueduct is found in which part of the brain?

A 55-year-old patient with idiopathic trigeminal neuralgia reports sharp, stabbing pain in the upper lip and nose. Which branch of the trigeminal nerve is affected?

A 58-year-old man is diagnosed as having a slowly growing tumor in the deep perineal space. Which of the following structures would most likely be injured as it continues to grow?

The dorsal trigeminothalamic tract is a pathway for which type of sensation?

A 29-year-old woman is admitted to a hospital because the birth of her child is almost 2 weeks overdue. Tearing of the pelvic diaphragm during childbirth leads to paralysis of which of the following muscles?

A 59-year-old woman comes to a local hospital for uterine cane surgery. As the uterine artery passes from the internal iliac artery to the uterus, it crosses superior to which of the following structures that is sometimes mistakenly ligated during such surgery?

A 22-year-old woman receives a deep cut in the inguinal canal 3 cm lateral to the pubic tubercle. Which of the following ligaments may be lacerated within the inguinal canal?

A 32-year-old carpenter fell from the roof. The lateral longitudinal arch of his foot was flattened from fracture and displacement of the keystone for the arch. Which of the following bones is damaged?

A 37-year-old man was newly diagnosed with carcinoma of the skin of the penis. With advanced disease, cancer cells are likely to metastasize directly to which of the following lymph nodes?

An obstetrician performs a median episiotomy on a woman before parturition to prevent uncontrolled tearing. If the perineal body is damaged, the function of which of the following muscles might be impaired?

A 22-year-old man has a gonorrheal infection that has infiltrated the space between the perineal membrane of the urogenital diaphragm and the superficial perineal fascia (Colles). Which of the following structures might be inflamed

A 21-year-old marine biologist asks about her first bimanual examination, and it is explained to her that the normal position of the uterus is

A 62-year-old man is incapable of penile erection after rectal surgery with prostatectomy. The patient most likely has a lesion of which of the following nerves?

A 43-year-old woman presents with a prolapsed uterus. Repair of a prolapsed uterus requires knowledge of the supporting structures of the uterus. Which of the following structures plays the most important role in the support of the uterus?

A basketball player was hit in the popliteal region by an opponent's knee. Damage to which of the following arteries might cause ischemia to the extensor muscles of the leg?

A woman is delivering a breech baby. The obstetrician decides that it is best to perform a mediolateral episiotomy. Which of the following structures should the obstetrician avoid incising?

A 49-year-old woman has a large mass on the pelvic brim. Which of the following structures is most likely compressed by this mass when crossing the pelvic brim?

A 26-year-old man comes to a hospital with fever, nausea, pain, and itching in the perineal region. On examination by a urologist, he is diagnosed as having infected bulbourethral (Cowper) glands. Which of the following structures is/are affected by this infection?

A 6-month-old male infant is admitted to the children's hospital because only one testis is in his scrotum. During physical examination, the pediatrician palpates the undescended testis in the inguinal canal. What is the diagnosis of this condition?