Urinary System by Dr. Haitham Sewilam

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What is the main function of the urinary system?

To produce hormones

To absorb nutrients from food

To filter and cleanse the blood (correct)

To regulate body temperature

What is the function of the ureters?

To transport urine away from the kidneys (correct)

To store urine

To produce hormones

To regulate the acidity of the blood

What stimulates the desire to urinate?

Stretch receptors in the bladder (correct)

Hormonal control

The concentration of the urine

The volume of the bladder

What is the function of the nephrons?

To filter the blood and regulate the concentration of substances Signup and view all the answers

How many nephrons are present in each kidney?

Over 1 million Signup and view all the answers

Where are the nephrons located?

Partly in the cortex and partly inside the renal pyramids Signup and view all the answers

What is the role of the Sertoli cells in the seminiferous tubules?

Providing an environment for sperm development Signup and view all the answers

What is the purpose of the menstrual cycle?

Sexual reproduction and fertilization Signup and view all the answers

What hormone is responsible for controlling the follicular phase?

Estradiol Signup and view all the answers

What is produced by human embryos to preserve the corpus luteum?

Hormone chorionic gonadotropin (hCG) Signup and view all the answers

What is the result of the loss of the corpus luteum?

Menstruation Signup and view all the answers

What is the role of FSH in the follicular phase?

To recruit ovarian follicles for entry into the menstrual cycle Signup and view all the answers

What takes over the production of progesterone after 8-12 weeks?

Placenta Signup and view all the answers

What is the name of the stage follicle recruited by FSH during the follicular phase?

Graafian follicle Signup and view all the answers

What is the process by which a mature ovarian follicle ruptures and discharges an ovum?

Ovulation Signup and view all the answers

What is the phase of the menstrual cycle that ends with ovulation?

Follicular phase Signup and view all the answers

What is the time period surrounding ovulation referred to as?

Ovulatory phase Signup and view all the answers

What hormone is associated with the luteal phase?

Progesterone Signup and view all the answers

What is the site of blood filtration in the nephron?

Glomerulus Signup and view all the answers

What is the function of the internal urethral sphincter?

To involuntary relax to allow urine to pass Signup and view all the answers

How does the genital system develop embryologically?

It develops into three parts Signup and view all the answers

What hormone stimulates the synthesis and secretion of gonadotropins?

Gonadotropin Releasing Hormone (GnRH) Signup and view all the answers

What are the two main functions of the testes in the adult?

Acting as an exocrine organ and producing sperm Signup and view all the answers

At which stage of development does the genital system begin to form?

Late in development Signup and view all the answers