Boost Your Rank for NEET 2019 :Human Reproductive system

The secondary sex organs

Which of the following sets of animals give birth to young ones?

The growth, maintenance and functions of semiferous tubules and Leydig cells are regulated, respectively, by

The following questions are based on the given diagram

Parts labelled as 8, 9 and 10 respectively are

Consider the following structures in a human male

I. bulbourethral glands

II. bartholin’s glands

III. prostate gland

IV. seminal vesicles

Semen includes the secretion of

Consider the following statements

I. The human penis is made up of three columns of tissue: two corpora cavernosa lie next to each other on the dorsal side and one corpus spongiosum lies between them on the ventral side.

II. The enlarged and bulbous-shaped end of the corpus spongiosum forms the glans penis.

III. The urethra, which is the last part of the urinary tract, traverses one of the corpora cavernosa, and its opening, known as the meatus, lies on the tip of the glans penis.

IV. Urethrat is a passage both for urine and for the ejaculation of semen.

The correct statements include:

Correct sequence in development is

What would happen if vas deferens of a man are cut?

80% to 90% of seminal fluid (semen) is secreted by the combined secretions of

Consider the following diagram and answer questions 10

Epididymis, Vas deferns and Ejaculatory duct are respectively shown by

Consider the following statements regarding LH

I. It is a hormone produced by the anterior pituitary gland.

II. In the female, an acute rise of LH - the LH surge - triggers ovulation and corpus luteum formation.

III. In the male, it stimulates Leydig cell to produce testosterone.

IV. LH supports granulosa cells in the ovary that provide androgens and hormonal precursors for estradiol production.

The correct statements are

Meiosis II during spermatogenesis is results in the formation of

An increase in testosterone level would decrease the secretion of ………. and an increase in the production of inhibin would decrease the secretion of ……….

Consider the following statements regarding a human sperm

I. It consists of a head, middle piece and a tail

II. It contains 23 autosomes

III. It is solely responsible for the sex of a zygote

IV. It has large amount of cytoplasm

V. It has many mitochondria

Which of these are true?

Semen has an alkaline nature, and sperms do not reach full motility (hypermotility) until they reach the vagina where the alkaline pH is neutralized by acidic vaginal fluids. This gradual process takes 20-30 minutes. In this time, fibrinogen from the ………. Forms a clot, securing and protecting the sperm. Just as they become hypermotlie, fibrinolysin from ………. dissolves the clot, allowing the sperm to progress optimally.

Which of the following is common to the human male excretory and reproductive systems?

Zinc present in semen, which serves to help to stabilize the DNA-containing chromatin in the sperm cells, is contributed by

Amino acids, citrate, enzymes, flavins, fructose (the main energy source of sperm cells, which rely entirely on sugars from the seminal plasma for energy), phosphorylcholine, prostaglandins (involved in suppressing an immune response by the female against the foreign semen), proteins, vitamin C are all contributed to the semen by

Amongst the following identify those that are diploid

I. Spermatogonia

II. Spermatid

III. Primary spermatocyte

IV. Secondary spermatocyte

V. Sertoli cells

Broadening of shoulders and chest; shoulders wider than hips is a …… due to …… in humans