[Both placenta as well as ...] Signals for parturition originate from

For Competitive Exams

Signals for parturition originate from

Placenta only

Fully developed foetus only

Both placenta as well as fully developed foetus

Oxytocin released from maternal pituitary

Additional Questions

Which one of the following statements is false in respect of viability of mammalian sperm?

The endocrine structure and the corresponding hormones are listed in the table below. Match the columns and select the correct option.

Column I	Column II
(a) Hypothalamus	(p) Relaxin
(b) Anterior Pituitary	(q) Estrogen
(c) Testis	(r) FSH and LH
(d) Ovary	(s) Androgens
	(t) Gonadotropin releasing hormone

Hormones and their functions are listed in the table below. Match the columns and select the correct option.

Column I	Column II
(a) Oxytocin	(p) Stimulates ovulation
(b) Prolactin	(q) Implantation and maintenance of pregnancy
(c) Luteinizing hormone	(r) Lactation after child birth
(d) Progesterone	(s) Uterine contraction during labour
	(t) Reabsorption of water by Nephrons

Parts of the sperm and their descriptions are listed in the table below. Match the columns and select the correct option.

Column I	Column II
(a) Acrosome	(i) contains mitochondria producing energy for the sperm
(b) Head	(ii) whip-like movements to propel the sperm
(c) Midpiece	(iii) contains the chromosomes
(d) Tail	(iv) contains the enzymes for assisting fertilization

Which one of the following statements is correct?

The part of Fallopian tube closest to the ovary is

The cavity contained in graafian follicle is

About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH-surge) normally occurs?

Which group represents external genitalia of human female?

When released from ovary, human egg contains

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