Secretion Collection

Medulla oblongata in the brain, artwork
Hypothalamus in the brain. Computer artwork of a persons head showing the brain inside. The highlighted area shows the hypothalamus

Pancreatic islet of Langerhans
Islet of Langerhans. Light micrograph of a section through an islet of Langerhans (pale, centre) in pancreas tissue. This clump of secretory cells forms part of the endocrine system of the body

Three adder stones, also known as hag stones, witch stones, serpents eggs and snakes eggs. They are believed by some to have been formed by the secretions of snakes or adders

Spear / Bleekers Squid {Loligo bleekeri} larva secreting ink, captive, Japan

Relation of thyroid and pituitary gland

Trachea lining, SEM C013 / 7126
Trachea lining. Coloured scanning electron micrograph (SEM) of the lining of a trachea (wind pipe), showing the cilia (hair-like) and goblet cells (orange). The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7122
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe). The trachea links the larynx to the lungs

Trachea, SEM
Trachea. Coloured scanning electron micrograph (SEM) of the lining of the trachea (windpipe). The trachea links the larynx (voice box) to the lungs

Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone. Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, oxygen: red)

Trachea cross-section showing normal and asthmatic bronchiole
Trachea cross-section showing comparison of normal and asthmatic bronchiole

Trachea cross-section with lungs showing normal and asthmatic bronchiole
Trachea cross-section with lungs, showing comparison of normal and asthmatic bronchiole

Conceptual image of simple cuboidal epithelia

Conceptual image of pseudostratified columnar epithelium

Picture No. 10855044
Klipspringer's glandular secretion from preorbital gland, used to mark territory (Oreotragus oreotragus) Date:

Side view of a captive Marine Toad (Bufo marinus) showing bony ridge on nose, distinct visor over each eye, very large parotid glands, love to reddish brown skin, brown-speckled underside

Trachea lining, SEM C016 / 9756
Trachea lining. Coloured scanning electron micrograph (SEM) of the lining of the trachea (wind pipe). The trachea links the larynx to the lungs

MUC7 molecule. Computer model showing the structure of a molecule of the protein MUC7 (mucin 7). Mucins key characteristic is their ability to form gels

MUC5B molecule. Computer model showing the structure of a molecule of the protein MUC5B (mucin 5 subtype B). Mucins key characteristic is their ability to form gels

Female endocrine glands, artwork C016 / 7522
Female endocrine glands. Computer artwork showing the location of the endocrine glands (yellow) in a womans body. These are (from top to bottom): thyroid, thymus, adrenal glands (x2), pancreas

Insect defence glands, artwork C016 / 7681
Insect defence glands. Computer artwork of a beetle (order Coleoptera, left) and ant (family Formicidae, right), showing the location of the glands that secrete defensive chemicals

Islet of Langerhans beta cell, TEM
Islet of Langerhans beta cell. Transmission electron micrograph (TEM) of a section through a beta cell in an islet of Langerhans in the pancreas

Golgi membranes, TEM
Golgi membranes. Transmission electron micrograph (TEM) of a section through a cell, showing the membranes (dark lines) of the Golgi apparatus

Islet of Langerhans, TEM
Islet of Langerhans. Transmission electron micrograph (TEM) of a section through cells clustered in an islet of Langerhans in the pancreas

Anterior pituitary gland, TEM
Anterior pituitary gland. Transmission electron micrograph (TEM) of a section through cells of the anterior pituitary. The anterior pituitary, or adenohypophysis

Thyroid follicles, light micrograph
Thyroid follicles. Light micrograph of a section through a thyroid gland showing the follicles. The follicles are lined by a single layer of cuboidal epithelial cells

Enteroendocrine cell, TEM
Enteroendocrine cell. Transmission electron micrograph (TEM) of a section through an enteroendocrine cell within a gland of the stomach

Stomach wall, illustration C018 / 0793
Stomach wall. Illustration of a section through the wall of the stomach. The interior (lumen) of the stomach is at top. The stomach surface is lined with glandular mucosa that has numerous

Trachea lining, SEM C016 / 9755
Trachea lining. Coloured scanning electron micrograph (SEM) of the lining of the trachea (wind pipe). The trachea links the larynx to the lungs

Islet of Langerhans, TEM C015 / 6418
Islet of Langerhans. Transmission electron micrograph (TEM) of a section through cells clustered in an islet of Langerhans in the pancreas

Trachea lining, SEM C013 / 7127
Trachea lining. Coloured scanning electron micrograph (SEM) of the lining of a trachea (wind pipe), showing the cilia (hair-like) and goblet cells (pink). The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7125
Trachea lining. Coloured scanning electron micrograph (SEM) of the lining of a trachea (wind pipe), showing the cilia (hair-like) and goblet cells (orange). The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7124
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe). The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7123
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe). The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7121
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe), showing the ciliated epithelial cells. The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7120
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe), showing the ciliated epithelial cells. The trachea links the larynx to the lungs

Trachea lining, SEM C013 / 7119
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe), showing the ciliated epithelial cells. The trachea links the larynx to the lungs

Venus flytrap digestive glands, SEM
Venus flytrap digestive glands. Coloured scanning electron micrograph (SEM) of digestive glands from a Venus flytrap plant (Dionaea muscipula)

Sundew carnivorous plant leaf, SEM
Sundew leaf. Coloured scanning electron micrograph (SEM) of the sticky stalks (red) on the leaf of a cape sundew (Drosera capensis), a carnivorous plant

Sweat gland in skin. Light micrograph of a section through the dermis of the skin showing a sweat gland. The gland is composed of a secretory portion (upper left)

Hair follicles, SEM
Hair follicles. Coloured scanning electron micrograph (SEM) of a section through freeze- fractured hair follicles in the skin

Thyroid gland, light micrograph
Thyroid gland. Coloured light micrograph of a thyroid gland showing the follicles. The follicles are lined by a single layer of cuboidal epithelial cells (purple, dark nuclei)

Ear wax, SEM
Ear wax. Coloured scanning electron micrograph (SEM) of ear wax (brown) collected on cotton bud fibres (green). Ear wax forms in the ear canal, which runs between the outer ear and the ear drum

Coloured SEM of a secreting uterine gland

Brunners glands in the duodenum
Brunners glands. Fluorescence confocal light micrograph of a section through a human duodenum (small intestine) showing Brunners glands (blue)

Secretory cells in pancreas, SEM
Pancreatic secretory cells. Coloured scanning electron micrograph (SEM) of a freeze-fracture through a healthy pancreas, showing the secretory tissue

Lactating breast tissue, SEM

Colon lining. Fluorescence confocal light micrograph of the lining of a mouse colon (large intestine). The colon starts at the small intestine and ends at the rectum

Insulin-secreting pancreatic cells
Insulin production. Artwork of a section through beta cells secreting insulin (blue spheres) into a capillary (small blood vessel, grey tube). Beta cells are found in the pancreas

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"Unveiling the Mysteries of Secretion: From Brain to Ink and Beyond" Delving into the depths of our brain, the medulla oblongata orchestrates a symphony of secretions that regulate vital bodily functions. Like an intricate artwork, the pancreatic islet of Langerhans reveals its hidden talent for secreting hormones essential for glucose metabolism. Three enigmatic adder stones hold ancient secrets, rumored to possess mystical powers related to secretion in folklore and mythology. In the depths of captivity, a tiny spear-like Bleekers Squid larva surprises us by secreting ink as a defense mechanism - nature's own disappearing act. Unraveling the complex relationship between the thyroid and pituitary gland unveils their crucial role in regulating hormone secretion throughout our body. Peering through electron microscopy lenses, we witness the delicate trachea lining at microscopic levels - a fascinating world where secretion takes place. With each SEM image revealing intricate details, we explore how normal and asthmatic bronchioles differ within cross-sections of our respiratory system's trachea. The parathyroid hormone molecule emerges as a key player in maintaining calcium balance through its precise secretion control mechanisms. Connecting back to their earlier mention, we revisit the intriguing relationship between thyroid and pituitary glands - two powerhouses driving hormonal secretions within us. A striking visual comparison showcases both healthy and asthmatic bronchioles alongside lungs within tracheal cross-sections - highlighting how secretion impacts respiratory health. In this captivating journey through various aspects of "secretion, " from brain function to squid ink defense mechanisms, we uncover remarkable connections across different realms of science and nature alike.