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Right choice is (a) False

The best I can explain: The penis contains THREE cylindrical masses of erectile tissue—two dorsal CORPORA cavernosa and one ventral CORPUS spongiosum. These bodies are surrounded by fibrous tissue.

The correct choice is (d) URINOGENITAL aperture

Best EXPLANATION: The penis is MALE GENITALIA (male copulatory organ). At the TIP of the glans penis is the slit like opening called the external urethral orifice or urinogenital aperture.

Right option is (d) URETHRAL MEATUS

To elaborate: External opening of the urethra is CALLED urethral meatus. The male urethra provides a COMMON pathway for the flow of urine called semen. It is much longer in male than in the female, MEASURING about 15-29 cm.

The correct choice is (b) False

To elaborate: The urethra includes three PARTS. The first part is surrounded by the prostate gland and is CALLED the prostatic urethra which arises from the URINARY BLADDER and carries urine only.

Correct answer is (c) Stereocilia

To explain I would say: The vas DEFERENS is lined with pseudostratified columnar epithelium. The FREE end of its cells also bears stereocilia. The MUSCULAR wall of the vas deferens is FORMED of smooth muscles, and the latter’s PERISTALTIC contractions propel the sperms through the vas deferens

The correct choice is (b) For temporary storage of sperms

Best EXPLANATION: The vas deferens LOOPS over the urinary bladder where it is joined by DUCT from the seminal vesicle to FORM the ejaculatory duct. The end of the vas deferens dilates to form a spindle-like ampulla for temporary storage of sperm.

The correct choice is (a) Cauda EPIDIDYMIS

The best I can explain: A 40cm long VAS deferens emerges from the cauda epididymis on each side and leaves the scrotal SAC and enters the abdominal CAVITY through the inguinal canal.

Correct answer is (a) leydig cells

Explanation: The growth, maintenance and FUNCTIONING of secondary SEX organs (epididymis, vasa deferentia, accessory glands and penis) are under the CONTROL of TESTOSTERONE hormone secreted by Leydig’s cells of testis, while those of seminiferous TUBULES and Leydig’s cells are controlled by Follicle Stimulating Hormone (FSH) and Interstitial Cells Stimulating Hormone (ICSH) of anterior pituitary lobe respectively.

The correct ANSWER is (d) Androgen

Explanation: The areas on the exterior of the SEMINIFEROUS tubules called interstitial spaces, contain small blood vessels and small clusters of big, polygonal cells called Leydig cells or interstitial cells. Leydig cells synthesize and SECRETE HORMONES (testicular) called androgens.

Right answer is (c) bulbourethral GLANDS

Explanation: Bulbourethral glands secrete an alkaline fluid. They ALSO secrete mucus that lubricates the end of the PENIS and lining of the URETHRA. This decreases the number of SPERMS damaged during ejaculation.

The correct CHOICE is (d) FRUCTOSE

For explanation I would say: Secretions of the accessory glands CONSTITUTE the seminal plasma which is rich in fructose, calcium and certain enzymes (acid phosphatase, amylase, PEPSINOGEN).

The correct option is (c) SPERMATIC CORD

To explain: The vas deferens ascends the PELVIC cavity through the inguinal canal along with the TESTICULAR artery, testicular vein and nerves that innervate the testes these structures together constitute the spermatic cord.

The correct option is (a) pseudostratified columnar

For explanation I would say: The VAS deferens is lined with pseudostratified columnar epithelium. The free end of its cells also BEARS stereocilia. The muscular wall of the vas deferens is formed of SMOOTH muscles, and the LATTER’s peristaltic contractions propel the SPERMS through the vas deferens.

Correct answer is (b) CAPUT EPIDIDYMIS

Easy explanation: At the anterior end of the testis it is CALLED caput epididymis(head), in which the vasa efferentia OPEN. The middle part of the epididymis is known as corpus epididymis(body). The posterior end of the epididymis is called as cauda epididymis(tail).

Right ANSWER is (b) Prostate

Explanation: Prostate is a gland. The male SEX accessory DUCTS include rete testis, vasa efferentia, epididymis and VAS deferens. The seminiferous tubules of the TESTES open into the vasa efferentia through rete testis.

Correct choice is (a) Sertoli cells

Explanation: Each seminiferous tubule is lined on its inside by two types of cells CALLED male germ cells (spermatogonia) and a few large pyramidal Sertoli cells. The male germ cells undergo MEIOTIC DIVISIONS finally leading to sperm FORMATION, while Sertoli cells provide attachment and nutrition to the germ cells.

Correct option is (d) SEMINIFEROUS tubules

Easy explanation: Each testis has about 250 compartments called TESTICULAR LOBULES. Each LOBULE contains ONE to three highly coiled seminiferous tubules in which sperms are produced.

Correct CHOICE is (d) TUNICA vasculosa

The explanation is: The tunica vaginalis is the outer covering of the testis. The tunica albuginea is a FIBROUS covering surrounding the testis is situated under the tunica vaginalis. The tunica vasculosa consists of a NETWORK of capillaries supported by delicate connective tissue which lines the tunica albuginea.

Right OPTION is (b) FALSE

The explanation is: False, the left testes is LOCATED 1cm LOWER than the right testes. Testes are the primary sex organs in males. Soft, smooth, PINKISH, oval bodies, about 4-5cm in length, 2-3cm in width and 2.4-2.5cm thick.

Right answer is (B) cryptorchidism

For explanation I would SAY: FAILURE of the testes to descend into the scrotum is called cryptorchidism. Palatovaginal canal is a canal present in the cranial region whereas pudendal canal is present in the pelvic region. Foramen (anatomy) MEANS – an OPENING.

Correct OPTION is (a) inguinal canal

For explanation: TESTES develop in the abdominal CAVITY but during the seventh month of development, they descend permanently into their respective scrotal sacs through inguinal canals. Sometimes an inguinal canal remains open. A LOOP of intestine may enter the scrotum to cause a disorder, CALLED inguinal hernia.

Right option is (d) Septum scroti

The best explanation: Scrotum is a pouch-like loose fold of SKIN arising from the LOWER abdominal WALL and hanging between the legs. Its DERMIS consists of a continuous layer of smooth MUSCLE fibres called dartos tunic. A muscular partition, the septum scroti divides the scrotum internally into the right and left scrotal sacs.

Right choice is (b) Pelvis region

The EXPLANATION: The MALE reproductive system is LOCATED in the pelvis region. It includes a pair of TESTES along with ACCESSORY ducts, glands and the accessory or external genitalia.