Internal Organs Anatomy Overview ♻️

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General Overview of Internal Organs
Definition: Internal organs are structures within the body that perform specific functions necessary for life.
Number: Approximately 78-80 in the human body.
Location: Primarily located within the body cavities (cranial, thoracic, abdominal, and pelvic).
Function: Each organ has a specialized role, contributing to the overall homeostasis and survival of the organism.
Organ Systems and Examples
To better understand the scope of internal organs, here's a breakdown by organ system:

Cardiovascular System:
Heart: Pumps blood.
Blood vessels (arteries, veins, capillaries): Transport blood.
Respiratory System:
Lungs: Facilitate gas exchange (oxygen and carbon dioxide).
Trachea, bronchi: Airways.
Digestive System:
Stomach: Breaks down food.
Small intestine: Absorbs nutrients.
Large intestine: Absorbs water, eliminates waste.
Liver: Produces bile, metabolizes substances.
Pancreas: Produces digestive enzymes and hormones.
Gallbladder: Stores bile.
Urinary System:
Kidneys: Filter blood, produce urine.
Bladder: Stores urine.
Ureters, urethra: Transport urine.
Endocrine System:
Glands (pituitary, thyroid, adrenal, etc.): Produce hormones.
Nervous System:
Brain: Controls bodily functions.
Spinal cord: Transmits signals.
Reproductive System:
Ovaries (female): Produce eggs, hormones.
Uterus (female): Supports fetal development.
Testes (male): Produce sperm, hormones.
Lymphatic System:
Spleen: Filters blood, immune function.
Thymus: Immune function.
Lymph nodes: Filter lymph, immune function.
Essential Functions of Internal Organs
Regulation: Maintaining internal stability (homeostasis).
Nutrient Processing: Digestion, absorption, and metabolism of nutrients.
Waste Removal: Filtering and eliminating waste products.
Reproduction: Producing offspring.
Protection: Immune defense against pathogens.
Communication: Hormone and nerve signaling.
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