Chapter 28 The reproductive systems Flashcards
What are the functions of the testes?
Produce sperm and male sex hormones
What do the ducts do in the male reproductive system?
- Transport
- Store
- Assist in maturation of sperm
Accessory male genital glands do what?
Secrete most of the liquid portion of semen
The penis contains what?
Urethra, a passageway for ejaculation of semen and excretion of urine
What are structures of the male reproductive system?
- Testes
- Epididymus
- Vas Deferens
- Seminal vesicles
- Ejaculatory ducts
- Prostrate gland
- Bulbourethral gland
- Penis
What are the testes?
- Paired
- Oval glands
- In the scrotum partially covered by the tunica vaginalis
What is the Tunica Albuginea in males?
Structure that extends inward to form septa that creates compartments
What does the Seminiferous tubules do?
produces sperm and carries them out of the testes
Efferent ducts do what?
Carry sperm to the epididymis
Where does the sperm mature?
Epididymis
The epididymis propels sperm towards what?
Ductus deferens
At puberty gonadotropin stimulates what in males?
The anterior pituitary to produce
1. Luteinizing hormone
2. Stimulating hormone
What does Luteinizing hormone do in males?
Stimulates cells in the testes to produce testosterone
What does the Follicle stimulating hormone do for males?
Stimulates spermatogenesis
What does testosterone do?
- Most important androgen
- Responsible for growth and development of male sex organs and secondary sex characteristics
The ductus (vas) deferens exits where?
- The tail of the epididymis and ascends through the spermatic cord into the pelvis
- Then, it loops over the ureter and passes over the side and down the posterior surface of the urinary bladder
What is the spermatic cord?
Ascends out of the scrotum and contains
1. ductus deferens,
2. Testicular artery
3. Veins draining the testes
4. Lymphatic vessels
5. Cremaster muscle
The spermatic cord and ilioinguinal nerve pass through what?
Inguinal canal which originates at the deep inguinal ring and ends at the superficial inguinal ring
The ejaculatory ducts arise from what?
The junction from the seminal vesicle and the ampulla of the ductus deferens
The urethra is the duct shared by what?
Reproductive and urinary systems
What are the seminal vesicles?
Secrete an alkaline, viscous fluid containing
1. Fructose
2. Prostaglandins
3. Clotting proteins
What is the prostrate?
Single, donut- shape gland that secretes
1. Milky
2. Slightly acidic fluid containing citric acid
3. Proteolytic enzymes
4. Phosphatase
5. Seminalplasmin
What are the bulbourethral (Cowper’s) glands?
Secrete an alkaline fluid during sexual arousal that neutralizes acids from urine and mucus for lubrication
What is the penis composed of?
- Corpus cavernosa
- Corpus Spongiosum
- Urethra
A erection is brought by what?
Parasympathetic innervation leading to vasodilation of arterioles in erectile tissue
Ejaculation is the powerful release of what?
Semen due to sympathetic stimulation
What contracts to get semen out?
- Bulbospongiosus
- Ischiocavernousus
- Superficial Transverse perineal muscles
What are the functions of the ovaries?
Produce oocytes and hormones including
1. Progesterone
2. Estrogen
3. Inhibin
4. relaxin
The uterine tubes transport what?
Secondary oocyte to the uterus
The uterus is the site for what?
- Implantation of a fertilized ovum
- Development of the fetus during pregnancy and labor
What are the structures of the female reproduction system?
- Ovary
- Uterus
- Cervix
- Fallopian tubes
- Round ligament
- Clitoris
- Vagina
- Labia
What are the ovaries supported by?
- Broad ligament
- Ovarian ligament
- Suspensory ligament
Histologically, Ovaries consist of what?
- Germinal epithelium
- Tunica Albuginea
- Ovarian Cortex
- Ovarian Medulla