What part of the insect is the abdomen?
An insect’s abdomen is the third functional region (tagma) of its body; the abdomen is located just behind the thorax. In most insects, the junction between thorax and abdomen is broad, but in some groups, the junction is very narrow (petiolate) giving the appearance of a “wasp-waist”.
Do insects have abdomen?
Insects have three major body regions: head, thorax, and abdomen (see Insect Body Regions, right).
What are the organ systems the abdomen of an insect contains?
Usually the middle and the last segment of the thorax have paired wings. The abdomen generally comprises eleven segments and contains the digestive and reproductive organs.
What is the function of the insects abdomen?
The abdomen makes up the last, and probably the most recognizable, part of the insect. This section of the body stores the bug’s digestive system, reproductive organs and sting organs (if applicable). The abdomen is a reactive part of the insect body, meaning that it can expand when the insect feeds.
What is the abdomen?
The abdomen (commonly called the belly) is the body space between the thorax (chest) and pelvis. The diaphragm forms the upper surface of the abdomen. At the level of the pelvic bones, the abdomen ends and the pelvis begins.
What is thorax and abdomen of insect?
Thorax: The body section after the head, with the legs and wings attached. There are three sections of the thorax: the prothorax, the mesothorax, and the metathorax. Abdomen: The posterior section of the body containing the reproductive and digestive organs.
What are insects body parts?
All adult insects have three body parts: head, thorax and abdomen.
How many abdominal segments are present in insects?
11 abdominal segments
Generally, in insects with 11 abdominal segments there will be 8 pairs of abdominal spiracles. * The genital segments – will discuss later as separate topic. * In many insects the 10th segment is a complete annulus, that is it forms a complete sclerite around the insect.
How many organs are in the abdomen?
The abdomen contains many vital organs: the stomach, the small intestine (jejunum and ileum), the large intestine (colon), the liver, the spleen, the gallbladder, the pancreas, the uterus, the fallopian tubes, the ovaries, the kidneys, the ureters, the bladder, and many blood vessels (arteries and veins).
Where is the abdomen located?
The abdomen is the largest space (cavity) in the body. It lies between the chest and the pelvis, holding many of the body’s organs. These include the liver, stomach, and intestines. The groin is the area in the body where the upper thighs meet the lowest part of the abdomen.
Where is the abdominal region located?
In vertebrates, the abdomen is a large body cavity enclosed by the abdominal muscles, at front and to the sides, and by part of the vertebral column at the back. Lower ribs can also enclose ventral and lateral walls. The abdominal cavity is continuous with, and above, the pelvic cavity.
What are the 3 parts of an insects body?
An insect has three body parts. The front part is called the head. The middle part is called the thorax. The last part is called the abdomen.
What insects have abdominal appendages?
The larvae of sawflies (Hymenoptera), moths, and butterflies (Lepidoptera) have remarkable abdominal appendages, known as prolegs. Although these two groups have similar caterpillar-like larval forms, the arrangement of prolegs is different.
What do you mean by abdomen?
(AB-doh-men) The area of the body that contains the pancreas, stomach, intestines, liver, gallbladder, and other organs.
Where is a female abdomen?
The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the torso. The area occupied by the abdomen is called the abdominal cavity.
What organs are in lower abdomen?
The abdomen contains all the digestive organs, including the stomach, small and large intestines, pancreas, liver, and gallbladder. These organs are held together loosely by connecting tissues (mesentery) that allow them to expand and to slide against each other. The abdomen also contains the kidneys and spleen.
How many parts are in the abdomen?
Overview. The anatomy of the regions and planes of the abdomen is composed of many layers with varying blood supply and innervation. The abdomen has been bisected, trisected, and even divided into as many as 9 separate regions. The layers of the abdominal wall consist of the skin, superficial fascia, and muscles.
What is an example of abdomen?
The definition of abdomen is the middle area on a body between the chest and the hips, also called the belly. An example of abdomen is the area that you exercise when doing a sit-up. In arthropods, the posterior body segment containing the reproductive organs, etc.
What organ is under belly button?
The pancreas is a long, thin organ located behind the stomach, in the upper left side of the abdomen. It produces enzymes to aid in digestion. If the pancreas becomes inflamed, the condition is known as pancreatitis.