During a woman’s menstrual cycle, a mature egg is released from one of the ovaries each month and moves into the____ in a process called ___

This signals that the woman is ready for pregnancy, as fertilization can occur if a sperm penetrates the egg.

__can occur if a sperm penetrates the egg.

The union of the sperm and egg is called___ Resulting in a__

serves as a protective membrane for the developing cells.

This zygote, while traveling to the ___, forms a ___

typically lasts about 40 weeks or 280 days, which includes an additional two weeks to account for ovulation and the last menstrual period

ranges from 37 to 41 weeks.

Infants born before 37 weeks

Infants born after 42 weeks

contain genes responsible for the child's characteristics, such as physical traits (hair color, height, eye color), cognitive abilities (intelligence), personality tendencies, and susceptibility to certain hereditary diseases.

What does a zygote inherit from each parent

shaped by both genetic factors and environmental influences.

traits that do become observable are part of the individual’s___

One of the most well-known examples of genetic inheritance is the___

Chromosome of female

Chromosome of male

Stages of Prenatal Development:

Within 3-4 days after fertilization, the zygote moves along the fallopian tube and implants itself in the uterine wall.

Through mitosis (cell division), the zygote develops into a blastocyst, which not only serves a protective role but also aids in the formation of the amniotic sac, placenta, and umbilical cord.

Through___ the zygote develops into a blastocyst, which not only serves a protective role but also aids in the formation of the amniotic sac, placenta, and umbilical cord.

aids in the formation of the amniotic sac, placenta, and umbilical cord.

the major organs and biological systems (respiratory, digestive, nervous) begin to form.

By the end of the 8th week, limb buds resembling underdeveloped limbs appear.

This stage is particularly vulnerable, with the risk of spontaneous abortions or miscarriages being highest.

This is the longest stage of prenatal development, lasting from the 8th week until birth.

During this time, the organs continue to develop, and the fetus’s senses, like hearing and smell, become functional.

The mother can feel the fetus's movements, and the fetus may start responding to external stimuli, such as the mother’s heartbeat and voice.

Main systems:

responsible for producing various hormones

governs the functioning of other body systems.

influences behavior based on the brain's development, which is the central organ of this system.

This system consists of glands throughout the body that release hormones directly into the bloodstream.

Key glands:

it regulates other glands.

It releases growth hormones, which affect overall body development, especially height.

___ aids in brain growth.

What does thyroid gland produce

A deficiency in this hormone may lead to mental impairments or learning difficulties.

Contribute to sexual drive, bone, and muscle development.

These are the sex glands

testes in males and ovaries in females

produce reproductive hormones.

These hormones become more prominent during adolescence.

Hormones of male and female name

coordinates responses to both internal and external stimuli.

Nervous system parts:

___transmits signals between the CNS and the rest of the body.

Central Nervous System (CNS) parts:

governs higher mental processes.

How old does brain lateralization occurs,

specializing in language

spatial and creative tasks.

When does brain development peaks

How does brain development peaks

Info As people age, brain cells decline, impacting cognitive functions like memory, motor skills, and sensory processing.

Neural activity is controlled by___

___which either stimulate or inhibit neuron responses.

The development of the ___ around neurons enables faster signal transmission, which is why reflexes dominate newborn behavior before voluntary actions take over.

Embryo development: