The highlighted structure (
scrotum
) contains a layer of smooth muscle that wrinkles the skin under cold conditions to help maintain the temperature of the testes.
Which structure is highlighted primary spermatocytes?
Primary spermatocytes are located in the
middle region of the seminiferous tubule
, within the adluminal compartment. These cells have a prolonged prophase that gives rise to the first meiotic division. Secondary spermatocytes are the product of the first meiotic division. They have 23 pairs of chromatids.
What happens to sperm as it passes through the highlighted structure?
What happens to a sperm as it passes through the highlighted structure?
It remains immature and immobile. It becomes mobile and capable of fertilization. It divides, producing new sperm.
What structure is responsible for voluntary release of urine from the highlighted structure into the urethra?
Structure and Function
The internal urethral sphincter regulates involuntary control of urine flow from the bladder to the urethra, and
the external urethral sphincter
provides voluntary control of urine flow from the bladder to the urethra.
Which structures are located within the spermatic cord?
The spermatic cord (Figs 4.10, 4.11, 4.13) contains the
ductus deferens (vas deferens), the testicular artery and the pampiniform plexus of veins
. Other structures in the cord are the cremasteric artery, the artery to the vas, nerve to the cremaster, sympathetic nerves and the lymphatics of the testis and epididymis.
What is secreted by the highlighted structures?
Sebum
is secreted by the highlighted structure.
What is a function of the highlighted structure?
It is the main integration center of the ANS: “the boss” of the ANS. It
regulates critical sympathetic functions
, but not parasympathetic functions. It does not play a major role in ANS functions, Hormones Teleased from the highlighted structure.
Which structure is highlighted and marked by the leader lines?
Which structure is highlighted and indicated by the leader line?
uterus
.
What hormone controls reabsorption of water in the highlighted structure?
What hormone controls reabsorption of water in the highlighted structure quizlet?
Antidiuretic hormone (ADH, vasopressin)
which is secreted by the posterior pituitary gland in response to dehydration.
What part of the female system is the usual site of fertilization?
Fertilization usually takes place in
a fallopian tube that links an ovary to the uterus
. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
Which structure is last in the sequence of urine flow?
The ureters are two tubes that drain urine from the kidneys to the
bladder
. Each ureter is a muscular tube that drains into the bladder. Smooth muscle contractions in the walls of the ureters, over time, send the urine in small spurts into the bladder, the organ where urine is stored before it can be eliminated.
What muscle controls urine flow?
The pelvic floor muscle
[also known as the pubococcygeus (pu-bo-kak-sij-e- us) or PC muscle] supports your bladder and rectum and helps control your urine flow.
What is the urethra made up of?
The urethra is composed of an
inner epithelial lining, a spongy submucosa, a middle smooth muscle layer, and an outer fibroelastic connective-tissue layer
. The spongy submucosa contains rich vascular plexus that is responsible, in part, for providing adequate urethral occlusive pressure.
Can you feel the spermatic cord?
You should be
able to feel the firm, smooth tube of the spermatic cord
which runs up from the epididymis. Feel the testicle itself. It should be smooth with no additional hard lumps or swellings.
What happens when the spermatic cord is cut?
It happens when the spermatic cord, which provides blood flow to the testicle,
rotates and becomes twisted
. The twisting cuts off the testicle’s blood supply and causes sudden pain and swelling. Testicular torsion (also called testis torsion) requires immediate surgery to save the testicle.
Can the spermatic cord swell?
When the veins, called the pampiniform plexus, inside the spermatic cord get swollen it’s called a
varicocele
. Varicoceles are more common on the left side of the scrotum, than on the right side, due to differences in blood vessel connections on each side.
