Examples of The reticular layer in the following topics:
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- The dermis consists of a papillary and a reticular layer that serve to protect and cushion the body from stress and strain.
- The dermis is a tough layer of skin.
- They are the papillary layer (the upper layer) and the reticular layer (the lower layer).
- The reticular layer serves to strengthen the skin and also provides our skin with elasticity.
- The reticular layer also contains hair follicles, sweat glands, and sebaceous glands.
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- The epidermis does not contain blood vessels; instead, cells in the deepest layers are nourished by diffusion from blood capillaries that are present in the upper layers of the dermis.
- The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain.
- The reticular region lies under the papillary region and is usually much thicker.
- The reticular region receives its name from the dense concentration of collagenous, elastic, and reticular fibers that weave throughout it.
- Blood vessels that supply the capillaries of the papillary region are seen running through the reticular layer.
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- The integumentary system is the largest of the body's organ systems, made up of the skin and its associated appendages.
- The human skin consists of three major layers: the epidermis, dermis, and hypodermis.
- The epidermis forms the outermost layer, providing the initial barrier to the external environment.
- Beneath this, the dermis comprises two sections, the papillary and reticular layers, and contains connective tissues, vessels, glands, follicles, hair roots, sensory nerve endings, and muscular tissue.
- The deepest layer is the hypodermis, which is primarily made up of adipose tissue.
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- It is one of the two most common forms of nerve cell organization, the other being layered structures such as the cerebral cortex or cerebellar cortex.
- A nucleus may itself have a complex internal structure, with multiple types of neurons arranged in clumps (subnuclei) or layers.
- For example, the reticular nucleus of the thalamus is a thin layer of inhibitory neurons that surround the thalamus.
- One exception is the basal ganglia which are located not in the periphery but rather in the forebrain.
- They are the intermediary connections between the peripheral and central nervous systems.
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- The raphe nuclei form a ridge in the middle of the
reticular formation, and directly to its periphery, there is a division called
the medial reticular formation.
- The medial reticular formation is large, has long ascending
and descending fibers, and is surrounded by the lateral reticular formation.
- This study led to the
idea that the caudal portion inhibits the rostral portion of the reticular
formation.
- Reticular formation nuclei that modulate activity of the cerebral cortex are part of the reticular activating system.
- Describe the functions of the reticular formation region of the pons
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- The basement membrane is the fusion of two lamina: the basal lamina and the reticular lamina (or lamina reticularis).
- The two layers are collectively known as the basement membrane.
- The basal lamina layer can further be divided into two layers: the clear layer closer to the epithelium is called the lamina lucida, and the dense layer closer to the connective tissue is called the lamina densa.
- The electron-dense lamina densa membrane is about 30–70 nanometers in thickness, and consists of an underlying network of reticular collagen (type IV) fibrils (fibroblast precursors) which average 30 nanometers in diameter and 0.1–2 micrometers in thickness.
- Early stages of malignancy that are thus limited to the epithelial layer by the basement membrane are called carcinoma in situ.
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- Loose connective tissue is divided into 1) areolar, 2) adipose, 3)
reticular.
- This tissue resembles areolar connective tissue, but the only fibers in its matrix are the reticular fibers, which form a delicate network.
- The reticular tissue is limited to certain sites in the body, such as internal frameworks that can support lymph nodes, spleen, and bone marrow.
- This is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes, and the intervertebral discs.
- The hard outer layer of bones is composed of compact bone tissue, so-called due to its minimal gaps and spaces.
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- Although it is the most abundant and widely distributed of the primary tissues, the amount of connective tissue in a particular organ varies.
- Like to the timber framing of a house, the connective tissue provides structure and support throughout the body.
- Together the ground substance and fibers make up the extracellular matrix.
- The composition of these three elements vary tremendously from one organ to the other.
- Reticular fibers are short, fine collagenous fibers that can branch extensively to form a delicate network.
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- The fibroblast is the most common cell which creates collagen.
- The microfibril scaffolds and organizes the deposition of amorphous elastin.
- Reticular fibers or reticulin is a histological term used to describe a type of fiber in connective tissue composed of type III collagen.
- Reticular fibers crosslink to form a fine meshwork (reticulin).
- Reticular fiber is composed of one or more types of very thin and delicately woven strands of type III collagen.
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- The mucosa is the innermost layer of the gastrointestinal (GI) tract, composed of simple epithelium cells.
- It is the absorptive and secretory layer of the GI tract.
- The GI tract is composed of four layers.
- The mucosa is the innermost layer, and functions in absorption and secretion.
- The most variation is seen in the epithelium tissue layer of the mucosa.