What does the connective tissue do in the bladder?
What does the connective tissue do in the bladder?
Surrounding the mucosal layer is the submucosa, a layer of connective tissue with blood vessels and nervous tissue that supports and controls the surrounding tissue layers. The visceral muscles of the muscularis layer surround the submucosa and provide the urinary bladder with its ability to expand and contract.
What tissues stretch the bladder?
The rugae and transitional epithelium allow the bladder to expand as it fills. The second layer in the walls is the submucosa, which supports the mucous membrane. It is composed of connective tissue with elastic fibers. The next layer is the muscularis, which is composed of smooth muscle.
What tissue is in the urinary bladder and allows it to stretch and hold urine?
The wall of the bladder is comprised of smooth muscle fibers oriented in multiple different directions. These smooth muscle fibers are collectively known as the detrusor muscle. This interwoven orientation provides the bladder with the ability to stretch in response to the presence of urine.
What is the difference between relaxed and stretched epithelium?
The layer of tissue just underneath the epithelium is connective tissue, and at the bottom of the image you can see some smooth muscle tissue. The image shows the wall of the urinary bladder in the relaxed state (not distended). When the tissue is stretched, the cells, especially those on the surface, become flat.
Does the bladder stretch?
As the ureters — two tubes that expel urine from the kidneys to the bladder — fill the bladder, the muscle wall thins and the bladder moves upward, toward the abdominal cavity. This stretching can increase the size of the bladder from about 2 inches to more than 6 inches long, depending on the amount of liquid.
What is a connective tissue?
Tissue that supports, protects, and gives structure to other tissues and organs in the body. Connective tissue is made up of cells, fibers, and a gel-like substance. Types of connective tissue include bone, cartilage, fat, blood, and lymphatic tissue.
What is an example of connective tissue?
Some of these tissues are solid and strong, while others are fluid and flexible. Examples include adipose, cartilage, bone, blood, and lymph.
What type of epithelium is urinary bladder?
Lining epithelium: The urinary bladder lining is a specialized stratified epithelium, the urothelium.
What is connective tissue give two examples?
The primary elements of connective tissue include a ground substance, fibers, and cells. There are three main groups of connective tissues: Loose connective tissue holds organs in place and attaches epithelial tissue to other underlying tissues.
What is connective tissue structure?
Connective tissue has three main components: cells, fibers, and ground substance. Together the ground substance and fibers make up the extracellular matrix. Cartilage is avascular, while dense connective tissue is poorly vascularized. Others, such as bone, are richly supplied with blood vessels.
What is the connective tissue of the urinary bladder?
The surface of the lateral and inferior sides of the urinary bladder forms a layer of loose connective tissue known as the adventitia. The adventitia loosely connects the urinary bladder to the surrounding tissues of the pelvis.
What makes up the smooth muscle in the bladder?
In the bladder, they might be acting as nerve signal transducers to smooth muscles. [5] Muscularispropria: This layer is made up of the smooth muscle coat with the interstitial connective tissue of the urinary bladder wall, known as the detrusor muscle. It consists of three layers, inner and outer longitudinal and middle circular layer.
Is the lining of the bladder a stratified epithelium?
Lining epithelium:The urinary bladder lining is a specialized stratified epithelium, the urothelium (transitional epithelium). Urothelium is exclusively seen only in urinary structures such as the ureter, urinary bladder, and proximal urethra.
How big are urinary bladder cells when relaxed?
When fully relaxed, the cells are several hundred microns long, and the widest diameter is 5–6 μm. The cytoplasm is packed with the normal myofilaments, and the membranes contain regularly spaced dense bands, with membrane vesicles (caveoli) between them.
