Chapter 4 - Male Structures Flashcards
(38 cards)
What are the external structures of the penis?
- Corona
- Frenulum
- Glans
- Urethral Opening
- Foreskin
Frenulum
- A highly sensitive thin strip of skin that connects the glans to the shaft on the underside of the penis
- (Back little bridge thing)
What are glans?
- The head of the penis
- It is richly endowed with nerve endings
Corona
- The Rim of the penile glans
- (Bottom of tip)
Urethral opening
- Where pee and semen come out
Fore skin
- A covering of skin over the penile glans
What is the Scrotum?
- The pouhc of skin of the external male genitals that enclose the testes
What are internal structures of scrotum?
- Seminiferous Tubules
- Epididymis
- Vas Deference
- Spermatic Cord
- Testis
- Cremasteric Muscle
What is Seminiferous Tubules
- Creates Sperm
- Located in Testes
- Thin Coiled structures in which the testes travel through
What is Epididymis
- Located right above testes/ On the back of each testis
- Sperm goes here after being Created
- Sperm matures here
What is Vas Deferens
- Sperm held in Epdiidymis eventually drains into Vas Defrens
- A long thin duct that goes up through scrotum inside spermatic cord
Cremasteric Muscle Fibers
- Influence the Position of the testis in scrotal sac
- These muscle can be voluntarily contracted
- In Spermatic Cord
What Is cut during a vasectomy
- Vas Deferens
Reproductive and Prostate stuff picture
- Seminal Vesicle
- Prostate gland
- Cowper’s gland
- Root of Penis
- Rectum Anus
Seminal Vesicle
- Two Small glands adjacent to the end s of the vas deferens that produce most of the liquid sperm travels in (70%)
- Fluid is rich in Fructose
Prostate Gland
- Structure the size and shape of walnut
- Located at base of bladder
- Ejacutlaory Ducts and Urethra pass through this gland
- Produces 30% of semen
- Very basic to help counteract vagina acidity
Cowper’s Glands
- Two pea Sized glands located alongside the base of the urethra in the male that secrete precuum
- Goal is to lubricate urethra
- Can still have live sperm depending on last erection
What is the root?
- The portion of the penis that extends internally into the pelvic cavity
What is the Path of Sperm
- Sperm is is created in Seminiferous Tubules
- Sperm moves into Epididymis (20 foot long coiled tube)
- Sperm matures in Epididymis over 2-7 weeks (this helps get rid of abnormal sperm)
- Sperm then goes up Vas Deferens
- Passes by Seminal Vesicle where 70% of seminal fluid is produced
- Passed Prostate gland where 30% of seminal fluid is produced where it turns into combat Acidic vagina
- Waits in ejaculatory duct
- Cowper Gland Produce precum to lubricate urethra
What are Erections Controlled by?
- Automatic Nervous System
Two Phases of Ejaculations?
- Emission phase
- Expulsion phase
What is Emission phase
- Gets sperms to top of urethra
What is Expulsion Phase
- Gets Sperm out of body
- Takes 3-10 seconds
Ejaculations are ….
- A Spinal Reflex