Understanding Sperm Capacitation for IVF
To achieve successful in-vitro fertilization (IVF), sperm must undergo a maturation process called capacitation. This process modifies the sperm surface, enabling it to penetrate and fertilize the egg.
What is Sperm Capacitation?
Capacitation is a physiological process occurring within the female reproductive tract, but it can also be induced in vitro. It involves biochemical changes to the sperm membrane and underlying proteins, which:
- Enhance sperm motility.
- Enable the acrosome reaction (release of enzymes needed to penetrate the egg).
- Allow the sperm to bind to the egg's outer layers.
Without capacitation, sperm cannot fertilize an egg, even in a controlled laboratory setting like IVF.
Why Other Options Are Incorrect
- Syngamy: This refers to the fusion of genetic material (nuclei) of the sperm and egg after they have penetrated the egg membrane. It's a post-fertilization event.
- Parturition: This is the process of childbirth or giving birth.
- Ovulation: This is the release of an egg from the ovary.
Therefore, the specific process required to make sperm competent for IVF is capacitation.
Important Questions from Human Reproduction
Match List - I with List - II.
List - I List - II (A) Prostate gland (II) Store and transport sperms (B) Leydig cells (II) Male external genitilia (C) Ejaculatory duct (III) Male accessory gland (D) Penis (IV) Testicular hormones Choose the correct answer from the options given below:
Which part of the sperm help in its entry into the cytoplasm of the ovum?
Sequentially arrange the developmental stages of human spermatozoon:
(A) Secondary Spermatocyte
(B) Spermatid
(C) Spermatozoa
(D) Spermatogonia
(E) Primary spermatocytes
Choose the correct answer from the options given below:
Which of the following hormone is not produced by placenta?
_______ is produced mainly by the Corpus luteum in the ovary following ovulation.
