Topics
Transportation in Plants
- Transport System in Plants
- Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue)
- Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue)
- Differences Between Xylem and Phloem
- Diffusion
- Osmosis
- Forces Contributing to Ascent of Sap
- Root Pressure
- Concept of Transpiration
- Factors Affecting the Rate of Transpiration
- Significance of Transpiration
Reproduction in Plants
- Sexual Reproduction in Plants
- Pollination
- Fertilisation in Flowering Plants
- Artificial Pollination
Reproduction in Humans
- Fertilization in Human
- Pregnancy in Humans
Ecosystems
- Forests: Our Lifeline
- Food Chain
- Food Web
- Energy Pyramid
- Risks to Ecosystem
- Need to Restore and Conserve the Ecosystems
Human Body: Endocrine System
- Chemical Coordination
- Human Endocrine System
- Human Endocrine Glands
- Thyroid Gland
- Adrenal Gland (Suprarenal Gland)
- Pancreas (Islets of Langerhans)
- Pituitary Gland or Hypophysis Gland
- Concept of Adolescence
- Physical Changes
- Adolescence and the Related Psychological Changes
- Types of Hygiene: Personal Hygiene
- Stress Management
Human Body: Circulatory System
- Circulation in Animals
- Fluids in Our Body
- Blood Circulatory System
- Human Heart
- Blood Vessels
- Circulation of Blood in the Heart (Functioning of Heart)
- Pacemaker
- Working mechanism of human heart
- Types of Closed Circulation
- Tissue Fluid (Or Intercellular Fluid)
- Lymph and Lymphatic System
- Blood Transfusion and Blood Groups (ABO and Rh system)
- Heart Related Conditions
- Keeping the Heart Healthy
Human Body: Nervous System
- Control and Co-ordination
- Control and Co-ordination in Human Being
- Human Nervous System
- Neuron (Or Nerve Cell)
- Nerve Fibres
- Major Division of the Nervous System
- Central Nervous System (CNS)
- The Human Brain
- The Spinal Cord
- Peripheral Nervous System > Somatic Nervous System
- Reflex Action
- Types of Reflexes
- Reflex Arc
Health and Hygiene
- Health
- Hygiene
- Disease
- Categories of Disease
- Spread of Communicable Diseases
- Viral Diseases
- Vector Borne Diseases
- Principles of Prevention of Diseases
- Vaccination and Immunization
- First Aid and Emergency Action
- Tobacco Abuse
- Alcohol Abuse
Food Production
- Bacteria
- Useful Role of Bacteria in Industry
- Useful Role of Bacteria in Food Industry
- Useful Role of Bacteria in Medicine
- Useful Role of Bacteria in Agriculture
- Fungi
- Economic Importance of Fungi
- Crop and Its Types
- Horticulture
- Types of Farming in India > Organic Farming
- White Revolution
- Meat Providing Livestock
- Poultry Farm Management
- Aquaculture
- Animal Husbandry (Livestock) > Pisciculture (Fish Farming)
- Sericulture
- Animal Husbandry (Livestock) > Apiculture (Bee Farming)
Maharashtra State Board: Class 8
Hypertension:
High blood pressure, also called hypertension, is when the pressure of blood in the arteries is higher than normal. When someone has hypertension, the arteries are under excessive pressure, which can cause extra strain and stress on the walls of the blood vessels. Because of this higher pressure, the heart has to work harder to pump blood throughout the body. Over time, this extra effort can lead to damage in the heart and blood vessels.
- Both systolic pressure (pressure during the heartbeat) and diastolic pressure (pressure when the heart relaxes) are elevated in people with hypertension.
- Hypertension is often called the "silent killer" because it typically does not show clear symptoms, but it can cause serious health issues like heart attack, stroke, and kidney problems if not managed.
- Managing hypertension is important, and this can be done through lifestyle changes, medication, regular exercise, a healthy diet, and avoiding excessive salt intake.
- Regular blood pressure monitoring helps to detect and manage hypertension early, preventing potential complications.
| Type | Systolic Pressure | Diastolic Pressure |
|---|---|---|
| Normal Blood Pressure | 90 - 119 mm | 60 - 79 mm |
| Primary Hypertension | 120 - 139 mm | 80 - 89 mm |
| Hypertension Stage-I | 140 - 159 mm | 90 - 99 mm |
| Hypertension Stage-II | > 160 mm | > 100 mm |
