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Week 3 Discussion

Endocrine, Lymphatic, Cardiovascular

TermDefinition
Pituitary Gland "Master Gland" lobes that secrete hormones controlling growth, reproduction, and other glands
Thyroid Gland Produces thyroxine (T4) and triiodothyronine (T3), regulating metabolism
Parathyroid Glands Secrete parathyroid hormone (PTH) to regulate calcium levels
Adrenal the cortex produces steroid hormones like cortisol and aldosterone, while the medulla secretes adrenaline and norepinephrine
Pancreas Has both endocrine (insulin, glucagon) and exocrine functions
Lymphatic Vessels Open-ended capillaries that collect lymph and transport it toward larger vessels
Lymph Nodes Small, bean-shaped structures (about 500–600 in humans) that filter lymph and house immune cells
Primary Lymphoid Organs Bone marrow and thymus, where lymphocytes (B and T cells) mature
Lymph Ducts Large vessels (e.g., thoracic duct, right lymphatic duct) that carry lymph to the venous system
Secondary Lymphoid Organs Sites like spleen, tonsils, and lymph nodes where mature lymphocytes gather to mount immune responses
Myocardium The muscular tissue of the heart.
Endocardium Inner lining of the heart chambers.
Pericardium Protective sac surrounding the heart.
Atria Upper chambers of the heart.
Ventricles Lower chambers of the heart.
Created by: user-2046223
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