Areolar tissue is found under the dermis layer and beneath the epithelial tissue of all bodily systems having external openings.

Areolar connective tissue is a kind of connective tissue that connects and surrounds the human body\’s organs. This type of tissue has two important functions: it nourishes the cells and acts as a cushion to protect the organs from external forces

Because it is nearly totally found in the bladder, ureters, and urethra, it is also known as urothelium.

Because of its location in the excretory system, notably the ureters and urinary bladder, this tissue serves as an unusually efficient permeability barrier, impervious to water and most small molecules.

A kind of stratified epithelium is urothelium, also known as transitional epithelium. Transitional epithelium is a kind of tissue that changes shape in response to…

The human body’s fibrocartilage locations
• A secondary cartilaginous joint is a pubic symphysis. Fibrous annulus of the intervertebral disc
• The joint between the…

Fibrocartilage is the tough substance found in intervertebral discs, intraarticular cartilages in the knee, wrist, and temporo-mandibular joints, and articular cartilage in the temporo-mandibular and clavicle-sternum joints.

Fibrocartilage is a stiff, strong tissue found mostly in intervertebral disks as well as at ligament and tendon insertions; it is like other fibrous tissues but contains cartilage ground material and chondrocytes.

The protein elastin co-polymerizes with the protein fibrillin in elastic fibers. As in the walls of arteries, these fibers are frequently arranged into lamellar sheets….

Elastic cartilage, also known as yellow fibrocartilage, is a form of cartilage that gives specific portions of the body, such as the ears, both strength and elasticity….

The dermis is an example of irregular dense connective tissue, whereas tendons are examples of regular dense connective tissue.

In thick connective tissue with minimal ground material, collagen fibers are plentiful. If the densely packed bundles of fibers are aligned in one direction, it is called regular; if they are oriented in several directions, it is called irregular

The most frequent form of collagenous connective tissue is loose connective tissue (areolar connective tissue). It occurs in tiny, elongated bundles separated by ground material areas.

Collagenous fibers are formed of type I, II, or III collagen and are present in all forms of connective tissue. The ratio of collagen fibers to ground material distinguishes two forms of collagenous connective tissue

Collagen fibers are structural components in vertebrate tissues that transfer stresses, store energy, and dissipate energy. Collagen fibers have a hierarchical structure composed of collagen molecules, microfibrils, fibrils, fibers, and fascicles, and they restrict tendon and other load-bearing tissue deformation

Collagenous Connective Tissue
While flexible, collagen strands have great tensile strength, resist stretching, and give the characteristic resilience and strength of ligaments and tendons. Even when the body is moving, these fibers maintain connective tissues together

Hyaline cartilage can be found on the sternal ends of the ribs, in the larynx, trachea, and bronchi, and on the articulating surfaces of bones. It gives the structures a solid but flexible aspect. Collagen fibers provide such structures and joints strength, but they also limit mobility and flexibility.

The major components of hyaline cartilage matrix are type II collagen and chondroitin sulphate, which are also found in elastic cartilage.

Externally, hyaline cartilage is protected by the perichondrium, also known as the synovial membrane, when it runs along articulating surfaces. Capillaries in this membrane give nourishment to the cartilage through diffusion

Hyaline cartilage is the glassy (hyaline) and transparent cartilage found on many joint surfaces. The ribs, nose, larynx, and trachea all contain hyaline cartilage. It…

Multipolar neurons have dendrites that allow them to take impulses from many neurons. Dendrites communicate across the neuron via an electrical signal that travels down the axon. Motor neurons are the most common type of nerve cell body plan: they are multipolar, with one axon and several dendrites.

GIANT MULTIPOLAR NEURON
Three or more processes are associated with the cell bodies of multipolar neurons. The axon transports electrical impulses (action potentials)…

Cardiac muscle cells form a highly branched cellular network in the heart. They are composed of myocardial tissue layers that wrap around the chambers of the heart and are linked end to end by intercalated disks

To meet the metabolic demands of peripheral tissues such as skeletal muscles, kidneys, brain, skin, liver, heart, and gastrointestinal tract, the cardiac output (the amount of blood pumped by the heart per minute) fluctuates.

The heart is mostly composed of cardiac muscle cells (or myocardium). Two of its most noticeable characteristics are the contractility of the heart, which serves as the foundation for its pumping function, and the rhythmicity of the contraction

Cardiac muscle differs from skeletal muscle in that it contracts on a regular basis and lacks voluntary control. The sinoatrial node, which serves as the heart\’s pacemaker, regulates the rhythmic contraction of cardiac muscle

Cardiac muscle, also known as myocardium, is one of three primary muscle groups found solely in the heart in vertebrates. Cardiac muscle, like skeletal muscle, has contractile units known as sarcomeres, which distinguishes it from smooth muscle, the third muscle type.

When studied under a microscope, skeletal muscle cells exhibit a striped, or striated, pattern of bright and dark areas. These stripes are caused by the orderly…

Skeletal muscle cells differ from other muscle tissues because of their structure. Skeletal muscle cells are generated throughout fetal development by the union of numerous smaller cells, resulting in long, straight muscle fibers with many nuclei

All conscious bodily motions, including limb movement, face expressions, eye movements, and swallowing, are controlled by skeletal muscle tissue. Skeletal muscle contractions provide most of the body\’s heat because of cellular metabolism.

Skeletal muscle tissue cells are voluntary, striated, non-branched, and multinucleated. Skeletal muscle tissue is the only type of muscle tissue that is directly controlled by the cerebral cortex of the brain, giving it the label of voluntary muscle

Skeletal muscle accounts for approximately 40% of total body mass and is the most common and extensively distributed muscle tissue. It is found in the eyes, throat,…

Smooth muscle fibers are organized into branching bundles. Unlike skeletal muscle fibers, these bundles are not perfectly parallel and ordered, but rather constitute a complex structure. As a result, the cells can contract with far more force than striated muscle

Caveolae are tiny pouch-like invaginations generated by the cell membrane in the cytoplasm that function similarly to T-tubules in skeletal muscle. A basal lamina connects smooth muscle cells to the connective tissue that surrounds them

Smooth muscle cells have a thickness of 3-10 m and a length of 20-200 m. Myofilaments dominate the cytoplasm, which is consistently eosinophilic. The nucleus, which is in the core, takes on a cigar-like structure during contraction

Smooth muscle tissue, as opposed to striated muscle, contracts gently and naturally. It makes up a large portion of the musculature of internal organs and the digestive system

10. Our pancreas sits behind your stomach and in front of your spine. The pancreas has two main functions: an exocrine function that helps in digestion and an endocrine function that regulates blood sugar.

9. Your gallbladder is a small, pear-shaped organ on the right side of your abdomen, just beneath your liver. . Your gallbladder stores and releases bile to help your digestive system break down fats.

8. The liver is the largest solid organ in the body. It removes toxins from the body\’s blood supply, maintains healthy blood sugar levels, regulates blood clotting, and performs hundreds of other vital functions. It is located beneath the rib cage in the right upper abdomen.

7. The rectum is the last several inches section of the large intestine, and it connects the colon to the anus. It is where the body stores stool before a person is ready to have a bowel movement.

6. The large intestine is in your lower abdominal cavity from your waist down. The purpose of the large intestine is to absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over.

5.The small intestine is coiled inside the lower abdominal cavity beneath the stomach. The small intestine breaks down food from the stomach and absorbs much of the nutrients from the food.

4. The stomach is a muscular organ located on the left side of the upper abdomen. The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food.

3. The esophagus is a hollow, muscular tube that connects the throat to the stomach. It lies behind the trachea (windpipe) and in front of the spine.

2. The pharynx is a fibrous muscular tube that lies behind the oral and nasal cavity. It transports air and food to the larynx and esophagus respectively.

1. The salivary glands are exocrine glands that are positioned in the head, in and around the oral cavity and secrete their salivary contents into the mouth. Their function is to help keep the oral mucosa protected and lubricated.