Question

Что такое беременность? зоология

Answer 1

Беременность у животных — физиологическое состояние самки, наступающее в момент оплодотворения и заканчивающееся рождением плода. Беременность у млекопитающих (кроме яйцекладущих), живородящих рыб (акулы, скаты и др.) и пресмыкающихся (гадюка, живородящая ящерица и др.) существенно отличается.

Answer 2

Ответ:

Беременность у животных — физиологическое состояние самки, наступающее в момент оплодотворения и заканчивающееся рождением плода. Беременность у млекопитающих (кроме яйцекладущих), живородящих рыб (акулы, скаты и др.) и пресмыкающихся (гадюка, живородящая ящерица и др.) существенно отличается.Беременность у коров, тёлок называется стельностью[1].

Answer 3

What is Pregnancy in Zoology?

In zoology, pregnancy refers to the period during which a female animal carries and develops offspring in her uterus until birth. It is a reproductive process that is common among mammals, including humans. During pregnancy, the female's body undergoes various physiological and hormonal changes to support the growth and development of the fetus.

Pregnancy in Humans

In the context of human biology, pregnancy is the state of carrying a developing embryo or fetus in the uterus. It is a crucial stage in human reproduction and typically lasts for about nine months. Pregnancy begins with fertilization, where a sperm cell fertilizes an egg, resulting in the formation of a zygote. The zygote then undergoes a series of cell divisions and implantation into the uterine lining, leading to the development of an embryo.

Throughout pregnancy, the mother's body goes through significant changes to accommodate the growing fetus. These changes include hormonal fluctuations, enlargement of the uterus, weight gain, and the development of various physiological systems to support the needs of the developing baby.

Pregnancy is divided into three trimesters, each lasting approximately three months. During this time, the fetus undergoes rapid growth and development, with major organs and body systems forming and maturing. The mother's body provides essential nutrients and oxygen to the fetus through the placenta, a temporary organ that develops in the uterus.

Key Points:

- Pregnancy in zoology refers to the period during which a female animal carries and develops offspring in her uterus until birth. - In human biology, pregnancy is the state of carrying a developing embryo or fetus in the uterus. - Pregnancy in humans typically lasts for about nine months and is divided into three trimesters. - During pregnancy, the mother's body undergoes significant changes to support the growth and development of the fetus.