Definitions of sigmoid flexure. the s-shaped curve between the descending colon and the rectum. synonyms: sigmoid colon. type of: colon. the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted.
What is sigmoid flexure in cattle?
Sigmoid Flexure– The s-shaped curvature of the penis when it is retracted in the body. During sexual excitation, and erection, the sigmoid flexure disappears when the penis straightens.
What is the sigmoid flexure in a bull?
The penis is maintained inside the body of the bull by the sigmoid flexure, an anatomical structure that prevents exposure of the penis to prevent injuries. During copula- tion, the musculature responsible for the sigmoid flexure (retractor muscles) relaxes and the penis extends and becomes exposed.
What is the function of a sigmoid flexure?
Its function is to expel solid and gaseous waste from the gastrointestinal tract. The curving path it takes toward the anus allows it to store gas in the superior arched portion, enabling the colon to expel gas without excreting faeces simultaneously.
Does a stallion have a sigmoid flexure?
Stallion – In horses, a male is called a stallion. In contrast to the bull, the stallion’s scrotum is located further toward the rear of the animal and is less pendulous. The stallion also lacks a sigmoid flexure.
Where is the sigmoid intestine?
The sigmoid colon is an “S” shaped portion of the large intestine that begins in front of the pelvic brim as a continuation of the descending colon and becomes the rectum at the level of the third sacral vertebrae.
Do male cows have udders?
The answer to both questions of whether male cows have udders and “do male cows produce milk?” is no. Only female cows have udders in order to feed baby calves milk. On the other hand, their male counterparts or bulls only have nipples, no developed breasts, so they don’t have any udders.
Can the sigmoid colon be removed?
Sigmoidectomy surgery removes all or part of the sigmoid colon – the S-shaped part of the large intestine just before the rectum. Where possible the two healthy ends of the intestinal tract are then rejoined. If this is not possible then a stoma may be formed.
What can cause pain in the sigmoid colon?
The most common disorders of the colon are inflammatory bowel diseases such as: ulcerative colitis, which causes pain in the sigmoid colon—the final part of the large intestine that leads to the rectum. Crohn’s disease, which typically causes pain around the belly button or on the lower right side of the abdomen.
What is a sigmoid loop?
N or spiral sigmoid loop- occurs if the sigmoid is on a short mesentery. It is also formed when the sigmoid is on a long mesentery and the retroperitoneal fixation of the descending colon is low in the pelvis. Removal of N loop is essential to help passage into the descending colon.
How do hogs mate?
The Courtship. Pigs enjoy touching each other and make nuzzling a part of their courtship. During courtship, the boar may nudge and nuzzle the sow’s flank, head, genital area and shoulders, showering her with his attention. The sow and boar sing to each other as they nuzzle and chase each other.
How do pigs reproduce?
The three methods of breeding are pen mating (boar run with females), hand mating (supervised natural mating), and artificial insemination (AI). Pen mating is generally found on smaller operations and works best in a pen of pigs in various stages of the estrous cycle.
What does a normal sigmoid colon look like?
It’s about a foot and a half long (around 40 centimeters) and is shaped like the letter “s.” Its job is to hold feces until you’re ready to go to the bathroom. The sigmoid contains a lot of muscle tissue.
How does the sigmoid colon work?
Sigmoid colon, a terminal section of the large intestine that connects the descending colon to the rectum; its function is to store fecal wastes until they are ready to leave the body.
Is coffee bad for diverticulosis?
During acute attacks of diverticulitis, eat a low-fiber diet. Avoid foods that may contribute to nausea or pain, such as caffeine, spicy foods, chocolate, and milk products. When symptoms of diverticulitis stop, gradually transition to a high- fiber diet.
What side of chickens ovary is functional?
It is divided into two separate parts: the ovary and the oviduct. In almost all species of birds, including chickens, only the left ovary and oviduct are functional. Although the embryo has two ova- ries and oviducts, only the left pair (i.e., ovary and oviduct) develops.
What is it called when a sperm joins with an egg?
Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. This can occur either inside (internal fertilization) or outside (external fertilization) the body of the female.
What do you call a cryptorchid stallion?
Cryptorchid, ridgling, and even rig are terms used to describe a stallion with at least one undescended testis. The condition is not unique to equids, but the horse is of specific importance as the retained testis fails to produce viable sperm, so fertility rates are affected.
What is epididymis function?
The epididymis is a long, coiled tube that rests on the backside of each testicle. It carries and stores sperm cells that are created in the testes. It’s also the job of the epididymis to bring the sperm to maturity — the sperm that emerge from the testes are immature and incapable of fertilization.
What structure is connected to the sigmoid colon?
The sigmoid colon is attached to the posterior pelvic wall by a mesentery – the sigmoid mesocolon. The long length of the mesentery permits this part of the colon to be particularly mobile.
What is the innervation to the sigmoid colon?
Anatomical description has recognized that the parasympa- thetic innervation of the descending and sigmoid portions of the large intestine is provided by components of the sacral parasympathetic roots from sacral nerves two, three, and four, which ascend from the pelvis to reach the colon.
What does sigmoid stand for?
Sigmoid: In human anatomy, the lower colon (the lower portion of the large bowel). Sigmoid is short for sigmoid colon. From the Greek letter sigma, which is shaped like a C. Sigmoid also means curved in two directions like the letter S. For example, a sigmoid curve is an S-shaped curve.