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Author Archives: anatomy

The Trachea

Posted on May 21, 2025 by anatomy

The Trachea: The trachea, or windpipe, is a rigid tube reinforced with C-shaped cartilage rings that conducts air from the larynx to the bronchi while keeping the airway open.

Posted in Organs | Tagged airway structure, breathing pathway, respiratory system, trachea diagram, windpipe anatomy

Aquaporin Water Channel

Posted on May 20, 2025 by anatomy

Aquaporin Water Channel: Aquaporins are membrane proteins that facilitate rapid water transport across cell membranes, essential for maintaining fluid balance in tissues like the kidneys and the brain.

Posted in Cells | Tagged aquaporin diagram, cellular hydration, kidney filtration, membrane channels, water transport proteins

Phases of the Cardiac Cycle

Posted on May 19, 2025 by anatomy

Phases of the Cardiac Cycle: The cardiac cycle includes atrial systole, ventricular systole, and diastole, each phase coordinating contraction and relaxation to maintain continuous blood flow through the heart and circulatory system.

Posted in System | Tagged cardiac cycle diagram, ECG interpretation, heart contraction phases, heart rhythm, systole and diastole

Germ Layers

Posted on May 18, 2025 by anatomy

Germ Layers: The three primary germ layers—ectoderm, mesoderm, and endoderm—form during gastrulation and give rise to all tissues and organs in the developing embryo.

Posted in Anatomy | Tagged cellular differentiation, ectoderm mesoderm endoderm, embryonic development, fetal development, germ layers diagram

Goiter

Posted on May 18, 2025 by anatomy

Goiter: A goiter is an abnormal enlargement of the thyroid gland, often due to iodine deficiency, autoimmune disease, or hormonal imbalance, which can lead to visible swelling in the neck and thyroid dysfunction.

Posted in Health | Tagged endocrine disorders, goiter diagram, iodine deficiency, thyroid enlargement, thyroid gland anatomy

Chordae Tendinae Papillary Muscles

Posted on May 16, 2025 by anatomy

Chordae Tendinae Papillary Muscles: These structures work together to prevent prolapse of the heart valves during ventricular contraction; the chordae tendineae anchor the valve cusps to the papillary muscles in the ventricles.

Posted in Muscles | Tagged AV valve function, chordae tendineae, heart structure, heart valve support diagram, papillary muscle anatomy

Capillary Bed

Posted on May 15, 2025 by anatomy

Capillary Bed: Capillary beds are networks of microscopic vessels where exchange of oxygen, nutrients, and waste occurs between blood and surrounding tissues, regulated by precapillary sphincters that control blood flow.

Posted in Anatomy | Tagged blood-tissue exchange, capillary bed diagram, capillary function, microcirculation, vascular anatomy

Major Systematic Veins

Posted on May 15, 2025 by anatomy

Major Systematic Veins: Major systemic veins include the superior and inferior vena cava, jugular veins, subclavian veins, and iliac veins, all channeling deoxygenated blood back to the heart.

Posted in Anatomy | Tagged blood return to heart, large veins, major veins diagram, systemic circulation, venous system

Large Intestine

Posted on May 13, 2025 by anatomy

Large Intestine: The large intestine absorbs water and electrolytes from indigestible food matter and forms and stores feces, while also housing beneficial bacteria that aid in digestion and vitamin production.

Posted in Organs | Tagged colon anatomy, digestive tract, gastrointestinal system, intestinal absorption, large intestine diagram

Heart Musculature

Posted on May 13, 2025 by anatomy

Heart Musculature: The heart is composed of specialized cardiac muscle tissue known as myocardium, which contracts rhythmically and involuntarily to pump blood through the circulatory system.

Posted in Muscles | Tagged cardiac tissue, heart contraction anatomy, heart muscle diagram, muscle fibers, myocardium structure

Depolarization in Sinus Rhythm

Posted on May 11, 2025 by anatomy

Depolarization in Sinus Rhythm: In normal sinus rhythm, depolarization originates in the SA node and spreads uniformly through the atria and ventricles, resulting in coordinated heartbeats seen as distinct P, QRS, and T waves on an ECG.

Posted in System | Tagged cardiac electrophysiology, ECG waveform, heart depolarization, PQRST complex, sinus rhythm diagram

The Absorptive Stage

Posted on May 11, 2025 by anatomy

The Absorptive Stage: During the absorptive stage, which occurs while nutrients are being digested and absorbed, the body uses glucose as its primary energy source and stores excess nutrients as glycogen and fat under the influence of insulin.

Posted in Health | Tagged absorptive state diagram, glucose uptake, insulin action, nutrient absorption, post-meal metabolism

Renin Angiotensin Aldosterone Pathway

Posted on May 10, 2025 by anatomy

Renin Angiotensin Aldosterone Pathway: This hormonal cascade begins with renin release from the kidneys, leading to the formation of angiotensin II, a potent vasoconstrictor, and the secretion of aldosterone, which promotes sodium and water retention.

Posted in System | Tagged aldosterone function, blood pressure regulation, fluid balance, kidney hormone system, RAAS diagram

Major Systemic Artery

Posted on May 9, 2025 by anatomy

Major Systemic Artery: The major systemic artery is the aorta, which distributes oxygenated blood from the left ventricle to the entire body via its ascending, arch, and descending sections.

Posted in Anatomy | Tagged arterial system, blood circulation, cardiovascular anatomy, heart arteries, major systemic artery diagram

Human Heart Photo

Posted on May 8, 2025 by anatomy

Human Heart Photo: A detailed photo of the human heart shows its four chambers, major vessels, and coronary arteries, often labeled for anatomical study or medical education.

Posted in Organs | Tagged cardiovascular system, heart anatomy, heart structure, human heart diagram, organ function

The Anterior Pituitary Complex

Posted on May 7, 2025 by anatomy

The Anterior Pituitary Complex: The anterior pituitary produces hormones including ACTH, TSH, GH, FSH, LH, and prolactin, regulated by hypothalamic signals and responsible for growth, metabolism, and reproductive function.

Posted in Organs | Tagged anterior pituitary diagram, endocrine system, hormone regulation, hypophyseal function, pituitary gland

Comparison of Artery and Vein

Posted on May 6, 2025 by anatomy

Comparison of Artery and Vein: Arteries have thick, muscular walls to handle high pressure and carry blood away from the heart, while veins have thinner walls, valves, and carry blood back to the heart under lower pressure.

Posted in Anatomy | Tagged artery vs vein diagram, blood flow, blood vessels comparison, circulatory anatomy, vascular system

Sewage Treatment Plan

Posted on May 5, 2025 by anatomy

Sewage Treatment Plan: A sewage treatment plant uses a combination of physical, chemical, and biological processes to remove contaminants from wastewater, producing treated water safe for discharge or reuse and minimizing environmental impact.

Posted in Health | Tagged biological treatment stages, environmental engineering, filtration process, sewage treatment diagram, wastewater management

The Respiratory Zone

Posted on May 4, 2025 by anatomy

The Respiratory Zone: The respiratory zone includes respiratory bronchioles, alveolar ducts, and alveoli, where gas exchange occurs between air and pulmonary capillary blood.

Posted in Organs | Tagged alveoli function, gas exchange, lungs anatomy, respiratory system, respiratory zone diagram

Large Medium Vein Venule

Posted on May 3, 2025 by anatomy

Large Medium Vein Venule: Venous return involves small venules merging into medium and large veins; these vessels have thinner walls than arteries and contain valves to prevent backflow.

Posted in Anatomy | Tagged blood return, large medium veins, vascular anatomy, vein venule diagram, venous system

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Latest Posts

  • The Trachea
  • Aquaporin Water Channel
  • Phases of the Cardiac Cycle
  • Germ Layers
  • Goiter
  • Chordae Tendinae Papillary Muscles
  • Capillary Bed
  • Major Systematic Veins
  • Large Intestine
  • Heart Musculature
  • Depolarization in Sinus Rhythm
  • The Absorptive Stage
  • Renin Angiotensin Aldosterone Pathway
  • Major Systemic Artery
  • Human Heart Photo

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