Chapter 3: Female and Male Anatomy Flashcards
Phallic symbols
Images of the penis that are usually suggestive of generative power
Penis
The male organ of sexual intercourse
Corpora Cavernoas
Two cylinders of spongy tissue in the penis that becomes congested with blood and stiffen during sexual arousal
Corpus spongiosum
The spongy body that runs along the bottom of the penis, contains the penile urethra, and enlarges at the tip of the penis to form the glans
Corona
The ridge that separates the glans from the body of the penis
Frenulum
The sensitive strip of tissue that connects the underside of the penile glans to the shaft
Root
The base of the penis, which extends into the pelvis
Shaft
Body of the penis, which expands as a result of vasocongestion
Foreskin
Loose skin that covers the penile glans in an uncircumcised male. AKA Prepuce
Circumscision
Surgical removal of the foreskin of the penis
32% of male newborns are circumcised
Pros to cirumscision
Circumcision lessens the risk of infections of the urinary tract, including infections by HPV and HIV, and even the risk of prostate cancer, whose development appears to be facilitated by infections
Other studies have found that circumcised males are about 30% less likely to contract genital herpes
15% less likely to develop prostate cancer than those who had not
Phimosis
Abnormal condition in which the foreskin is so tight that it cannot be withdrawn from the glands
Average length of erect penis
average erect penis was 5.16 inches
Average length of flaccid penis
average erect penis was 5.16 inches
Scrotum
Pouch of loose skin that contains the testes. It comes from the same linguistic root as the word “shred” which means “a long narrow strip”
Spermatic cord
The cord that suspends a testes within the scrotum and contains a vas deferens, blood vessels, nerves, and the cremaster muscle
Vas deferens
Tube that conducts sperm from the testes to ejaculatory duct of the penis
Cremaster msucle
The msucle that raises and lowers the testciles in response to temperature change and sexual stimulation
The testes serve two functions
they secrete sex hormones and they produce mature germ cells
Sperm
The male germ cell, which fertilizes the ovum (aka spermatozoon)
Androgens
The male sex hormones
Testosterone
A male steroid sex hormone
Secondary sex characteristics
Traits that distinguish the genders but are not directly involved in reproduction
Seminiferous tubule
A tiny, winding, sperm-producing tube located within the lobe of the testis (tightly packed)
Spermatogenesis
The process which sperm cells are produced and developed
-mature sperm have half of genetic material needed for a baby
The union of an X chromosome and a Y chromosome leads to the development of a
Male offspring
Two X chromosomes combine to yield
a female offspring.
Epididymis
A tube that lies against the back wall of the tesicle and serves as a storage facility for the sperm (for as long as 6 weeks before they die out)
Vasectomy
A sterilization in which the vas deferens (deferentia) are severed
Seminal vesicles
A small gland that lies behind the bladder and secretes a fluid that combines with sperm in the ejecualtory duct
Ejaculatroy ducts
A duct formed by the convergence of vas deferens and a seminal vesicle. Sperm travels via the ejaculatory duct through the prostate gland and into the urethra
Andropause
A decline in testosterone resulting in symptoms such as reduced energy, muscle mass, and desire for sex as well as problems with erection
Human growth hormone (HGH)
A hormone that helps maintain muscle strength and that may help prevent fat buildup
Prostate gland
The gland that lies beneath the bladder and secretes prostatic fluid, which gives semen its characteristic odour and texture (large chestnuts)
Cowper’s gland
A structure that lies below the prostate and empties its secretion into the urethra during sexual arousal (secrete an alkaline, clear, sticky substance to help with PH, normally no sperm but a few sperm can get into this secretion)
Semen
The whitish fluid that constitutes the ejaculate, consisting of sperm and secretions from the seminal vesicles, prostate gland, and cowper’s gland
70:30 ratio
Urologist
A physician who specializes in the diagnosis and treatment of diseases of the urogenital system
Urethritis
An inflammation of the bladder or urethra
-symptoms include frequent urination (urinary frequency), a strong need to urinate (urinary urgency), burning during urination, and a penile discharge
Testicular Cancer (not very common)
Yet it’s the most common form of solid-tumour cancer to strike men between the ages of 20 and 34.
Cryptorchidism
A condition in which at least one of the testciles fails to descend from the abdomen into the scrotum (1-7 males in birth)
Benign prostatic hyperplasia (BPH)
noncancerous enlargement of the prostate gland resulting from hormonal changes associated with aging, rather than from other causes such as inflammation due to STIs.
Prostatitis
Inflammation of the prostate gland
Prostate cancer is the most common cancer among Canadian men
CRAZY
Age
Prostate cancer is rare below the age of 45. The risk rises rapidly after the age of 50, and most men with the disorder are 65 or older.
Family history
The risk is higher for men who have a father, brother, or son who has had the disease.
Mutations of the BRCA1 or BRCA2 genes
Mutations in these genes are why breast and ovarian cancers are significantly more common in some families. It is believed that mutations in these genes may also heighten the risk of prostate cancer in men.
Race/ethnicity
Men of African ancestry are at higher risk for prostate cancer than men of European ancestry, and men of Asian origin have lower rates
Erection
The enlargement and stiffening of the penis as a consequence of its engorgement with blood
Performance anxiety
Feelings of worry about being able to function successfully with respect to sexual activity (or any other activity that might be judged by another person)
Sacrum
The thick, triangular bone located near the bottom of the spinal column
Men of African ancestry are at higher risk for prostate cancer than men of European ancestry, and men of Asian origin have lower rates
The division of the nervous system that regulates automatic bodily processes, such as heartbeat, pupil dilation, respiration, and digestion
Somatic
The division of the nervous system that regulates voluntary movements, such as wiggling a toe or waving an arm
Sympathetic nervous system
is in command during processes that involve a release of bodily energy from stored reserves, such as running, performing some other athletic task, or being gripped by fear or anxiety. The sympathetic branch also governs general mobilization of the body, by increasing the heart rate and respiration rate in response to threat, for example.
Parasympathetic nervous system
branch is most active during processes that restore reserves of energy, such as digestion. When we experience fear or anxiety, the sympathetic branch of the ANS quickens the heart rate. When we relax, the parasympathetic branch curbs the heart rate. The parasympathetic branch activates digestive processes, but the sympathetic branch inhibits digestive activity.
Peyronie’s disease
have excessive curvature that can make erection painful and enjoyment of coitus difficult.
Priapism
Persistent and painful erections of the penis
Priapism is often caused by leukemia, sickle-cell anaemia, or diseases of the spinal cord, although in some cases the cause remains unknown
Orgasm
The climax of sexual excitement
Paraplegia
Sensory and motor paralysis of the lower half of the body
Emission stage
The first phase of ejaculation, which involves contractions of the prostate gland, the seminal vesicles, and the upper part of the vas deferens
Urethral bulb
Small tube that makes up the prostatic part of the urethral tract. It balloons out as muscles close at either end, trapping semen prior to ejaculation
Expulsion stage
Second stage of ejaculation, during which muscles at the base of the penis and elsewhere contract rhythmically, forcefully expelling semen and providing pleasure
Retrograde ejaculation
Ejaculation in which the ejaculate empties into the bladder
Vulva (aka pudendum (place of shame))
The external sexual structures of the female
vulva consists of the mons veneris, labia majora, labia minora, the clitoris, and the vaginal opening
Mons veneris (AKA mons pubis or mons)
Mound of fatty tissue that covers the pubic bone.
- which is the joining of the pelvic bones at the front of the body, below the abdomen and above the clitoris.
- Gets pubic hair
Labia majora
Large folds of skin that run downward from the mons along the sides of the vulva (outer lips)
-shield the labia minora and the urethral and vaginal openings.
Labia minora
Hairless, light-coloured folds of skin located between the labia majora
- rich in sensory receptors
- change with arousal and orgasm
Clitoris
Female sex organ consisting of a shaft and a glans, located above the urethral opening (extremely sensitive)
-glans varies in size, typically <15mm
Corpora cavernosa
Masses of spongy tissue in the clitoral shaft that become engorged with blood and stiffen in response to sexual stimulation
(clitoris)
Prepuce
The fold of skin covering the glans of the clitoris
Clitoridectomy
Surgical removal of the clitoris
Excision
partial or complete removal of the clitoris and the labia minora, with or without removal of the labia majora
Infibulation
narrowing of the vaginal opening by creating a seal formed by cutting and repositioning the inner, or outer, labia, with or without removal of the clitoris
Urethral opening
The opening through which urine passes from the female’s body
Cystitis
An inflammation of the urinary bladder