5. Human Physiology
Human physiology delves into the individual and collective functioning of body systems crucial for survival. Key systems such as the digestive, circulatory, respiratory, excretory, and nervous systems are examined for their roles in maintaining body homeostasis. This chapter highlights how these systems interact to support essential bodily functions.
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What we have learnt
- Human physiology is the study of body systems and their functions.
- The digestive system is responsible for processing food and eliminating waste.
- The circulatory system plays a critical role in transporting essential substances throughout the body.
- The respiratory system facilitates gas exchange, supplying oxygen and removing carbon dioxide.
- The excretory system helps in the removal of metabolic wastes.
- The nervous system coordinates body activities via electrical impulses.
Key Concepts
- -- Digestive System
- A system responsible for ingestion, digestion, absorption of nutrients, and elimination of waste.
- -- Circulatory System
- Composed of the heart, blood, and blood vessels, this system transports oxygen, nutrients, hormones, and waste.
- -- Respiratory System
- Facilitates gas exchange in the body, allowing oxygen intake and carbon dioxide expulsion.
- -- Excretory System
- Responsible for removing metabolic waste from the body via organs like the kidneys and ureters.
- -- Nervous System
- Controls body activities through electrical impulses, consisting of the brain, spinal cord, and peripheral nerves.
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