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Osmoregulation in Fishes02:32

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
GPCRs Regulate Adenylyl Cylase Activity01:09

GPCRs Regulate Adenylyl Cylase Activity

Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of cells.
Two...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
The Parathyroid Glands00:59

The Parathyroid Glands

The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...
Anatomy of the Adrenal Glands01:17

Anatomy of the Adrenal Glands

The adrenal or supra-renal glands, situated above the kidneys and aligned with the twelfth rib, are paired pyramid-shaped structures crucial for the body's stress response. During stress, these glands secrete hormones vital for adaptive physiological reactions.
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct regions...
Accessory Glands of the Male Reproductive System01:16

Accessory Glands of the Male Reproductive System

The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...

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EFFECT OF THIOUREA TREATMENT ON TEMPERATURE SELECTION AND SWIMMING BEHAVIOUR IN PHOXINUS PHOXINUS.

Experientia·1963
Same author

An inactive thyroid gland in Carassius auratus.

Nature·1956
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Updated: Jul 18, 2026

RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs
08:13

RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs

Published on: April 12, 2013

テレオストの甲状腺活動

P Y FORTUNE

    Nature
    |March 14, 1953
    PubMed
    まとめ

    No abstract available in PubMed .

    キーワード:
    魚 魚は魚である.タイロイド腺/生理学

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    Assessing the Secretory Capacity of Pancreatic Acinar Cells
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    Assessing the Secretory Capacity of Pancreatic Acinar Cells

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    Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos
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    Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos

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    関連する実験動画

    Last Updated: Jul 18, 2026

    RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs
    08:13

    RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs

    Published on: April 12, 2013

    Assessing the Secretory Capacity of Pancreatic Acinar Cells
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    Assessing the Secretory Capacity of Pancreatic Acinar Cells

    Published on: August 28, 2014

    Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos
    08:42

    Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos

    Published on: February 19, 2016