Question 15: Name the functions of the following. (a) Corpus luteum (b) Endometrium (c) Acrosome (d) Sperm tail (e) Fimbriae
Class 12 - Biology - Human Reproduction Page 56
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Answered by
31
Hi friend,
(a) Corpus luteum − Corpus luteum is formed from the ruptured Grafiaan follicle. It secretes progesterone hormone during the luteal phase of the menstrual cycle. A high level of progesterone inhibits the secretions of FSH and LH, thereby preventing ovulation. It also allows the endometrium of the uterus to proliferate and to prepare itself for implantation.
(b) Endometrium − It is the innermost lining of the uterus. It is rich in glands and undergoes cyclic changes during various phases of the menstrual cycle to prepare itself for the implantation of the embryo.
(c) Acrosome − It is a cap-like structure present in the anterior part of the head of the sperm. It contains hyaluronidase enzyme, which hydrolyses the outer membrane of the egg, thereby helping the sperm to penetrate the egg at the time of fertilization.
(d) Sperm tail − It is the longest region of the sperm that facilitates the movement of the sperm inside the female reproductive tract.
(e) Fimbriae − They are finger-like projections at the ovarian end of the fallopian tube. They help in the collection of the ovum (after ovulation), which is facilitated by the beating of the cilia
HOPE THIS HELPS YOU:-))
(a) Corpus luteum − Corpus luteum is formed from the ruptured Grafiaan follicle. It secretes progesterone hormone during the luteal phase of the menstrual cycle. A high level of progesterone inhibits the secretions of FSH and LH, thereby preventing ovulation. It also allows the endometrium of the uterus to proliferate and to prepare itself for implantation.
(b) Endometrium − It is the innermost lining of the uterus. It is rich in glands and undergoes cyclic changes during various phases of the menstrual cycle to prepare itself for the implantation of the embryo.
(c) Acrosome − It is a cap-like structure present in the anterior part of the head of the sperm. It contains hyaluronidase enzyme, which hydrolyses the outer membrane of the egg, thereby helping the sperm to penetrate the egg at the time of fertilization.
(d) Sperm tail − It is the longest region of the sperm that facilitates the movement of the sperm inside the female reproductive tract.
(e) Fimbriae − They are finger-like projections at the ovarian end of the fallopian tube. They help in the collection of the ovum (after ovulation), which is facilitated by the beating of the cilia
HOPE THIS HELPS YOU:-))
Answered by
7
Corpus luteum, Endometrium, Acrosome, Sperm tail and Fimbriae are present in human beings and play vital role in human reproduction.
Explanation:
Functions of Corpus luteum, Endometrium, Acrosome, Sperm tail and Fimbriae are as following:
- Corpus luteum: This is present female body and helps to secretes progesterone hormone that supports female endometrium of uterus to get prepare for implantation, placentation and normal development of foetus.
- Endometrium: It is a vascular and glandular lining present in the uterus. it plays vital role during menstrual cycle and show changes during menstruation. It also responsible for the implantation of blastocyst and placentation.
- Acrosome: It is present in the outer covering of sperms and helps to penetrate sperm into egg's protective coat and fertlise the egg.
- Sperm tail: As its name suggest it helps to push the sperm for the proper movement of sperm.
- Fimbriae: fimbriae is present in fallopian tube that helps to catch the egg released by ovary and direct it towards fallopian tube.
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