Science Reviewer Flashcards
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The process in which blood and other tissues are shed from the uterus and leave the body through the vagina.
Menstruation
It is also called a menstrual period or menses.
Mentruation
Occurs on a monthly cycle throughout female reproductive life.
Menstruation
The first menstrual cycle.
Menarche
The first menstrual cycle occurs at the ages of
11 to 15
The time of a natural stopping of a woman’s menstrual cycle, and marks the end of fertility.
Menopause
Menopause happens between the ages of
45 to 55
is a term to describe the sequence of events that occur in your body as it prepares for the possibility of pregnancy each month.
Menstrual Cycle
Menstrual Phases (ENUMERATION)
- Menstruation Phase
- Follicular Phase
- Ovulation Phase
- Luteal Phase
During the menstrual phase, the lining of the uterus (endometrium) breaks down and is shed with some blood through the vagina. Menstrual bleeding usually lasts 5-7 days.
Menstruation Phase
Hormones prompt the creation of follicles on the ovaries. Usually just one follicle will mature into an egg. This phase lasts 6-7 days.
Follicular Phase
Estrogen levels rise and the uterus starts thickening its lining and preparing for pregnancy.
Follicular Phase
The egg is released from the ovaries into the fallopian tubes. Ovulation occurs usually between the 12th and 14th day of the cycle.
Ovulation Phase
After the egg is released the uterine lining thickens even more in order to receive the egg.
Ovulation Phase
If the egg is not fertilized, and there is no pregnancy, the thickened lining of the uterus breaks down and is shed, and a cycle begins again. This usually lasts 12-14 days.
Luteal Phase
Is released from the hypothalamus in the brain. It controls the production of luteinizing hormone (LH) and follicle- stimulating hormone (FSH) from the pituitary gland.
Gonadotropin-releasing Hormone
Stimulates the release of the egg (called ovulation).
Luteinizing Hormone
Stimulates estrogen and progesterone production.
Luteinizing Hormone
Causes growth of the uterine lining. Inhibits FSH.
Estrogen
Stimulates the release of LH and hence release of the egg. Inhibits LH after ovulation.
Estrogen
Maintains the uterine lining.
Progesterone
Prevents LH after ovulation.
Progesterone
is a small area in the center of the brain. It helps produce hormones that regulate heart rate, body temperature, hunger, and the sleep-wake cycle.
Hypothalamus
It secretes hormones that signal the reproductive organs to make sex hormones. Also controls ovulation and the menstrual cycle in women.
Pituitary Gland
Process through which the level of one substance influences the level of another substance.
Feedback Mechanism
It refers to the state of balance within a system.
Homeostasis
Any self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.
Homeostasis
rising levels of hormones feedback to increase hormone production.
Positive Feedback
rising levels of hormones give feedback to the hypothalamus and pituitary gland to decrease the production of the hormones.
Negative Feedback
provides positive feedback to the hypothalamus and pituitary gland.
Estrogen
The substance that stimulates the production of a product is called
Stimulatory
The substance that inhibits the production of a product is called
Inhibitory
Study of living organisms and their interactions with each other and their environment.
Biology
Human reproductive system, organ system by which humans reproduce and bear live offspring.
Reproductive System
Functions of the male reproductive system:
- Produce, maintain, and transport sperm and protective fluid.
- Discharge sperm into the female reproductive tract during copulation.
- Produce and secrete male sex hormones.
Production of sperm is called
Spermatogenesis
Produces sperm and male sex hormones.
Testes
A pouch of skin and muscle that hangs below the penis.
4 to 5 centimeters
Outside of the body, and lowers the temperature to permit sperm production.
Testes
the outer layer of the testis is called
tunica albuginea
Spermatogenesis occurs here, which are highly coiled structure inside the testes.
Seminiferous Tubules
Stores and matures sperm produced by the testes, allowing them to become motile.
Epididymis
is a long, tightly coiled tube that is attached to the back of each testicle. It connects testes to vas deferens.
Epididymis
Capable of motion
Motile
sperm duct
vas deferens
Transports mature sperm from the epididymis to the ejaculatory duct during ejaculation.
Vas deferens
Carrying away vessel.
Vas Deferens
Produce seminal fluid, a nutrient-rich fluid that nourishes and helps transport sperm.
Seminal Vesicle
located behind your bladder but in front of your rectum, the tip of the vas deferens is near the vesicles.
Seminal Vesicles
rich in nutrients, fructose, and prostaglandins, nourishes and protects sperm.
Seminal Fluids
combines with sperm to form semen.
Seminal Fluids
Produces a milky fluid (seminal fluid) that contributes to semen, enhancing sperm motility and viability.
Prostate
is a small, walnut-shaped organ. It’s below your bladder and in front of your rectum.
Prostate
These small glands are located beneath the prostate gland in the male reproductive system and are responsible for producing a clear, viscous fluid that is released into the urethra.
Bulbourethral
Serves as a duct for both urine and semen, carrying them out of the body through the penis during ejaculation.
Urethra
runs through the penis and extends from the bladder to the external opening at the tip of the penis.
Urethra
a mixture of sperm and fluids from the prostate and seminal vesicles.
semen
Parts of urethra
Prostatic
Membranous
Penile
External organ that delivers sperm into the female reproductive system during sexual intercourse.
Penis
Parts of the penis
Root
Shaft
Glans
Functions of the Female Reproductive System
- Produces eggs
- Menstruation and hormone production
- Fertilization and pregnancy
Oval-shaped glands that are located on either side of your uterus.
Ovaries
the primary reproductive organs in females.
Ovaries
produce hormones, including estrogen and progesterone, which regulate the menstrual cycle and have various effects on the body.
Ovaries
along with the pituitary gland, regulate the menstrual cycle. The cycle involves the development and release of an egg, changes in the uterine lining, and hormonal fluctuations. The ovaries respond to hormonal signals from the pituitary gland, particularly luteinizing hormone (LH) and follicle-stimulating hormone (FSH), to orchestrate these processes.
Ovaries
responsible for the development of secondary sexual characteristics during puberty. (female)
Estrogen
This hormone is crucial for preparing the uterine lining for a potential pregnancy. It helps maintain the uterine environment and supports the early stages of embryonic development.
Progesterone
Oviducts
Fallopian Tube
These are narrow tubes that are attached to the upper part of your uterus and serve as pathways for your egg (ovum) to travel from your ovaries to your uterus.
Fallopian Tubes
At the end of each fallopian tube nearest to the ovary, finger-like projections called fimbriae help capture the released egg during ovulation.
Fimbriae
Sperm typically travel through the uterus and into the fallopian tubes to meet the egg.
Fallopian Tube
Fertilization occurs in the part of the fallopian tube
ampulla
It can widen to accommodate a baby during delivery and then shrink back to hold something narrow like a tampon. It’s lined with mucous membranes that help keep it moist.
Vagina
Birth Canal
Vagina
enclose and protect the other external reproductive organs.
Labia Majora
They lie just inside your labia majora, and surround the opening to your vagina
Labia Minora
Your two labia minora meet at your ___, a small, sensitive protrusion that’s comparable to a penis in men or people assigned male at birth (AMAB). Your clitoris is covered by a fold of skin called the prepuce and is very sensitive to stimulation.
clitoris
a piece of tissue covering or surrounding part of your vaginal opening. It’s formed during development and present during birth.
Hymen
are chemical substances that act like messenger molecules in the body. After being made in one part of the body, they travel to other parts of the body where they help control how cells and organs do their work.
Hormones
Milk
Prolactin
Triggers the release of ovum from a mature ovarian follicle
LH
Ruptured Follicle in LH
Corpus luteum
Supports the production of progesterone during early pregnancy.
LH
Leydig cells in testes acts on it
LH