Male Reproductive System (Easy)

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What is the term for the inability of a man to develop or maintain an erection of sufficient rigidity for satisfactory sexual intercourse?

Infertility

Erectile Dysfunction (correct)

Priapism

Cryptorchidism

What is a potential cause of Priapism?

Certain blood disorders (correct)

Neurovascular damage

Insufficient androgen production

Structural damage to the male sex organ

Which of the following is a cause of Erectile Dysfunction?

Sensory receptor dysfunction

Psychogenic factors (correct)

Penile erection pathways obstruction

Autonomic nervous system disorders

What is the term for a condition where a man is unable to cause pregnancy in a fertile female?

Infertility Signup and view all the answers

What is the term for the persistence of a painful and abnormal erection lasting for more than 4 hours?

Priapism Signup and view all the answers

Which part of the nervous system is primarily responsible for penile erection?

Sacral parasympathetic input Signup and view all the answers

What is the primary function of the thoracolumbar sympathetic pathway in penile erection?

Vasoconstriction Signup and view all the answers

Which type of erection is initiated by tactile stimulus to the penis or genital area?

Reflexogenic erection Signup and view all the answers

What type of nerve is primarily responsible for sensation and motor functions of pelvic muscles?

Somatic nerve Signup and view all the answers

Which of the following is NOT a source of sexual stimuli that can initiate penile erection?

Auditory stimuli from a silent environment Signup and view all the answers

What is the immediate result of low cytosolic Ca2+ in vascular smooth muscle?

Increased blood flow into the sinusoidal cavernous spaces Signup and view all the answers

What is the role of cGMP in the erectile process?

To relax vascular smooth muscles and allow for increased blood flow Signup and view all the answers

What is the primary function of the urethral and bulbourethral glands during coitus?

To secrete mucus for lubrication Signup and view all the answers

What is the effect of phosphodiesterase 5 on cGMP?

It degrades cGMP Signup and view all the answers

What is the mechanism by which Sildenafil (Viagra) improves the response to sexual stimulation?

It inhibits phosphodiesterase 5 Signup and view all the answers

What occurs during the resolution phase after orgasm?

The body slowly returns to its normal level of functioning Signup and view all the answers

What is the term for the involuntary ejaculation of semen during sleep?

Nocturnal emission Signup and view all the answers

Which of the following is a characteristic of the resolution phase?

A general sense of well-being Signup and view all the answers

What is the term for the condition where semen enters the bladder instead of being ejaculated out of the body?

Retrograde Ejaculation Signup and view all the answers

Which of the following is a possible cause of retrograde ejaculation?

Diabetes Signup and view all the answers

What happens to the penis and testes during the resolution phase?

They return to their unstimulated size Signup and view all the answers

What happens to the muscles during the resolution phase?

Previously developed tension seeps out of them Signup and view all the answers

What is characterized by the inability to delay ejaculation on all or nearly all vaginal penetrations?

Premature Ejaculation Signup and view all the answers

Which of the following may play a role in the development of premature ejaculation?

History of sexual abuse Signup and view all the answers

What is the diagnostic criteria for retrograde ejaculation?

15 sperms/HPF in urine after ejaculation Signup and view all the answers

What is the primary control system responsible for the initial event of penile erection?

Parasympathetic nervous system Signup and view all the answers

What is the result of arteriolar dilation during penile erection?

Increased blood flow to the erectile tissues Signup and view all the answers

During which stage of life does testosterone levels drop and remain low until the onset of puberty?

Post-neonatal to childhood Signup and view all the answers

What is the primary function of testosterone during fetal life?

Differentiation of the male reproductive system Signup and view all the answers

What is the correlation between testosterone levels and the development of male characteristics during puberty?

Linear correlation Signup and view all the answers

What happens to the penis after ejaculation?

It returns to a flaccid state Signup and view all the answers

What is the function of the perineal muscles and anal sphincters during ejaculation?

They contract and cause thrusting movements Signup and view all the answers

What is the result of PKG activity?

Decreased Ca2+ influx Signup and view all the answers

What is the controlling system for ejaculation?

Sympathetic nervous system Signup and view all the answers

What is the result of the breakdown of cGMP by phosphodiesterases?

Decreased penile erection Signup and view all the answers

What is the function of the external urethral sphincter during ejaculation?

It relaxes to allow semen release Signup and view all the answers

What is the result of the cessation of Nitric oxide release?