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Organ and organ system level., Study notes of Biology

Biology

Organ and organ system level BIOLOGY 9th 2024

Typology: Study notes

2023/2024

Available from 12/02/2024

tooba-noor
tooba-noor 🇵🇰

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2 Dec 2024, 10:00 PM
ORGAN AND ORGAN
SYSTEM LEVEL
________________________
ORGAN:
------------
Definition:
"The group of different types
of tissues performing specific
functions is called an organ".
Different tissues of an
organ perform their specific functions
and these functions collectively
become the function/s of that organ.
Example:
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2 Dec 2024, 10:00 PM

ORGAN AND ORGAN

SYSTEM LEVEL

________________________

ORGAN:

Definition:

"The group of different types of tissues performing specific functions is called an organ". Different tissues of an organ perform their specific functions and these functions collectively become the function/s of that organ.

Example:

STOMACH is an organ specialised for the digestion of proteins and for storing food. Two major types of tissues are present in it's structure:

  1. Epithelial (glandular) tissues secretes gastric juice for the digestion of proteins.
  2. Muscular tissues performs contractions of stomach walls for grinding of food and moving food to posterior end. So two tissues perform their specific functions, which collectively become the function of stomach.

it's specific functions and the functions of all organs appear as the function of the organ system.

Example:

DIGESTIVE SYSTEM is an organ system that carries out the process of digestion. Major organs in it's framework are ORAL CAVITY, STOMACH, SMALL INTESTINE, LARGE INTESTINE, LIVER and PANCREAS. All these organs help in the process of digestion. Organ system level is less complex in plants (e.g, Root system) as compared to the animals. This is due to greater range of functions and activities in animals than in plants.