L14 - SAQ - Male Reproduction

Spermatogenesis

Spermiogenesis

Spermiation

<p>Production of testosterone</p> Signup and view all the answers

<p>Testosterone</p> Signup and view all the answers

<p>Protection</p> Signup and view all the answers

<p>Fertilisation</p> Signup and view all the answers

<p>Uterus</p> Signup and view all the answers

<p>Embryo development</p> Signup and view all the answers

<p>Septa</p> Signup and view all the answers

<p>Spermiation is the process by which mature spermatids are released from Sertoli cells into the seminiferous tubule lumen prior to their passage to the epididymis.</p> Signup and view all the answers

<p>Spermatogenesis takes 64 days.</p> Signup and view all the answers

<p>Normal sperm production requires a temperature 2-3°C below core body temperature.</p> Signup and view all the answers

<p>Different stages of differentiation in each seminiferous tubule include spermatogonia, spermatids, and primary spermatocytes.</p> Signup and view all the answers

<p>The parts of a sperm and their functions are: nucleus (contains condensed DNA), acrosome (facilitates sperm penetration), plasma membrane (surrounds the entire tail), midpiece (provides energy for motility), and tail (facilitates sperm movement).</p> Signup and view all the answers

<p>The functions of Sertoli cells include nourishment of seminiferous tubule cells, transport of nutrients to the lumen region, phagocytosis of cytoplasmic droplets and damaged germ cells, synthesis of luminal proteins, and hormonal modulation of tubular function.</p> Signup and view all the answers

<p>Leydig cells synthesize androgens, including testosterone and dihydrotestosterone, which play a role in male sex steroid synthesis, spermatogenesis, bone matrix development, muscle mass, and other physiological processes.</p> Signup and view all the answers

<p>The blood-testes barrier prevents autoimmune destruction of sperm and serves as a barrier to blood toxins.</p> Signup and view all the answers

<p>Androgen activity promotes spermatogenesis.</p> Signup and view all the answers

<p>Testosterone plays a role in the development of male sexual characteristics, regulation of spermatogenesis, and other physiological processes.</p> Signup and view all the answers

<p>Seminal plasma (~35-40% of volume) and cells (spermatozoa, leukocytes, bacteria, epithelial cells)</p> Signup and view all the answers

<p>Provision of energy source, prostaglandins, and neutralization of acidic prostate secretion</p> Signup and view all the answers

<p>Greater than 100 million/ml</p> Signup and view all the answers

<p>Marker for seminal vesicle function and energy source for sperm</p> Signup and view all the answers

<p>Inhibits the enzyme responsible for oxidation of citrate, increasing citrate concentration in seminal plasma</p> Signup and view all the answers

<p>7.2-8.0</p> Signup and view all the answers

<p>MPF activation</p> Signup and view all the answers

<p>In males, it causes regression of Müllerian ducts. In females, it is involved in follicular recruitment, selection, and growth.</p> Signup and view all the answers

<p>The male diagnostic workup may include a physical exam, semen analysis, hormone testing, genetic testing, and imaging studies.</p> Signup and view all the answers

<p>Yes, the inhibition of MPF activation could offer a target to prevent oocyte maturation and ovulation.</p> Signup and view all the answers

<p>The specificity of Meiosis to gamete production means that factors involved in the control of this process offer a good target for contraception.</p> Signup and view all the answers

<p>Serum AMH levels are used clinically to assess ovarian function and predict ovarian reserve that will respond to hormonal treatment in IVF.</p> Signup and view all the answers

<p>DM, CVD, Hypertension, Decreased HDL levels, Medications, Post radiation or surgery for prostate cancer, Lower spinal cord injury, Neurological diseases, Life style factors</p> Signup and view all the answers

<p>Impaired delivery of sperm to the female tract, decreased blood flow to the penis, decreased smooth muscle relaxation, increased breakdown of cGMP</p> Signup and view all the answers

<p>Inhibits PDE5, prolongs arteriolar dilation, prolongs erection</p> Signup and view all the answers

<p>Spinal reflex initiated, sympathetic discharge to the genital organs, reproductive ducts/accessory glands contract peristaltically, discharging their contents into the urethra, bulbocarvenous muscle at the base of the penis contracts, rapid series of contractions propel semen from the urethra</p> Signup and view all the answers

<p>ACH stimulates NO production, NO stimulates cGMP production, cGMP causes smooth muscle relaxation and arteriolar dilation, increased blood flow to the penis</p> Signup and view all the answers

<p>Not mentioned in the text</p> Signup and view all the answers

<p>Age</p> Signup and view all the answers

<p>SCD (Sperm Chromatin Dispersion), Tunel (Terminal deoxynucleotidyl transferase dUTP nick end labeling), Sperm Chromatin Structure Assay, Single Cell Electrophoresis Assay, Hemizone Assay, Antisperm Antibodies</p> Signup and view all the answers