Define a teratogen and provide several examples of teratogens.

Q: Explain the role of placenta for human life ?

A: Placenta act as channel to exchange matter from mother to foetus. Placenta bind to foetus with the…

Q: Conduct online research on teratogens and acquired birth defects. Resulting birth defects.

A: Any substance that exposes a foetus to an abnormality while the mother is pregnant is considered a…

Q: Explain how the structure of the placenta prevents mixing of fetal and maternal blood while allowing…

A: -First to understand placenta .  Placenta -- It is composed of fetal part which includes the…

Q: Describe the structure of the placenta and the pathways for exchange between maternal and fetal…

A: The placenta is an organ that forms in the uterus during pregnancy and helps in the transport of…

Q: List the functions of the placenta?

A: Step 1 The placenta is the fetomaternal connective that develops during pregnancy and forms a…

Q: Explain endometrium.

A: The reproductive system consists of two system namely male reproductive system and female…

Q: What are the MAJOR categories of teratogens?   a) Drugs and alcohol, radiation, poor nutrition b)…

A: KEY WORDS:- Teratogens - It is the agents such as  of biological or chemical that can induce effects…

Q: Describe the general events of embryonicdevelopment, and identify the end result of each.

A: Introduction: Embryonic development is also known as embryogenesis and forms the main part of the…

Q: How do teratogens cause birth defects?

A: Teratogens are those substances or agents that cause harmful mutations or deformations in the genome…

Q: Unlike some other types of birth defects, neural tube defects are largely preventable. Explain

A: Birth defects refer to the defects that occur in a person while he/she is still a fetus growing in…

Q: describe the sequence of cell types in spermatogenesis,and relate these to the stages of meiosis;

A: Spermatogenesis is the process of formation of sperms at puberty. This takes place in seminiferous…

Q: Define the term lacteal?

A: A lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestine. .…

Q: Explain the function of the placenta.

A: The placenta is referred to as the organ that develops in the body within the mother's uterus at the…

Q: Explain Pregnancy Sickness?

A: Pregnancy sickness is also called as morning sickness and is very common during pregnancy and…

Q: Describe changes that occur in the uterus duringmenstruation, pregnancy, and menopause.

A: The changes that occur in the female uterus during the stages of menstruation, pregnancy, and…

Q: Explain the hormonal changes in the maternal body duringpregnancy.

A: Pregnancy is the critical period in a women's life that undergoes various physiological and hormonal…

Q: Explain the hormone-responsive nature of endometrial tissue and link this to the pathology of…

A: The uterus consists of three layers: 1. Perimetrium- outer layer 2.myometrium- middle layer 3.…

Q: Describe the features and process of a fetus embryo at 10 weeks of pregnancy

A: Within twenty-four hours once fertilization, the egg that may become your baby quickly divides into…

Q: Describe nutritional, excretory, respiratory, and immune functions of the placenta

A:

Q: Define Preprophaseband

A: Mitosis is a process in the cell, where a single cell divides in two identical  daughter cells. The…

Q: Define neonatal period.

A: Embryo is defined as the earliest stage of development of the fertilized zygote(formed by the fusion…

Q: Describe the spermatogenesis and oogenesis in human

A:

Q: Define the term sporulation?

A: The organisms adapt on the planet in order to survive and reproduce. The organisms adapt to the…

Q: Explain why changes in cervical mucus can predict a woman’s monthly fertility?

A: cervical mucus is also known as white discharge which changes throughout the menstrual cycle.

Q: Describe the structure and function of the placenta and umbilical cord

A: The placenta and umbilical cord are important for the survival of the fetus.

Q: Relate the general stages of meiosis to the specific processes of spermatogenesis and oogenesis.

A: Meiosis occurs only in gametocyte stages of the germ cells. Two cell divisions result in four new…

Q: Explain why pregnant women often suffer from back strain late in their pregnancy.

A: Pregnancy, also known as gestation is the time during which one or more offspring develops inside…

Q: Describe the hormonal changes during pregnancy and the effect of these hormones.

A: Hormones are the chemical molecules which acts as a chemical messenger for different body tissues…

Q: List a number of teratogens and how they impact prenatal development. Provide examples such as…

A: Teratogen is a substance that lead to birth defects in an embryo or fetus. As a baby grow in the…

Q: Explain the terms: placenta and relaxin.

A: Embryonic development is the process by which the embryo forms and develops. In mammals, this term…

Q: Describe the physical changes of puberty.

A: Puberty is a period of significant change for a teen that culminates in full physical maturation.…

Q: x characteristics during puberty?

A: For males, secondary characteristics include facial and chest hair, increased body hair, pelvic…

Q: Define parthenogenesis.

A: Reproduction is the biological process through which new individual organisms are produced from…

Q: State five substances that are thought to be teratogenic

A: Introduction:- A teratogen is any agent that causes an abnormality following fetal exposure during…

Q: Differentiate a uterine fibroid from uterine cancer.

A: Introduction:- uterine cancer begins in the layer of cells that form the lining (endometrium) of the…

Q: Outline the effects of cleavage

A: Sperm fertilizes an egg, which then implants into the uterus and initiates sexual reproduction. Two…

Q: Define the normal age range for the onset of puberty.

A: When a boy or girl reaches puberty, they reach sexual maturity.  It results in bodily changes and…

Q: Explain the hormonal changes in human pregnancy.

A: Pregnancy or gestation is the period during which the offspring develops inside the woman after…

Q: What is the course of prenatal development, and how do teratogens affect thatdevelopment?

A: Developmental psychology is a scientific discipline that seeks to explain growth, development, and…

Q: Identify the three stages of labor, and describe the events that characterize each stage.

A: Labour It is defined as spontaneous onset of regular contractions, characterized by progressive…

Q: Distinguish between: embryo and a fetus

A: The terms embryo and fetus both refer to the developing baby inside the mother’s womb. The…

Q: Describe the roles of the four extraembryonic membranes.

A: Introduction :- One of the membranes that aid in the development of the embryo is the extraembryonic…

Q: Explain why teratogens are difficult to identify.

A: Introduction:- Teratogens are substances that may produce physical or functional defects in the…