Health, Disease, and Prevention: A Comprehensive Look
Health
According to the World Health Organization (WHO), health is a state of complete physical, mental, and social well-being.
Determinants of Health
These are the factors that influence the achievement of positive health:
- Habits and Lifestyle: Healthy eating, regular exercise, etc.
- Environment: Social, physical, and psychological factors (friends, city, work, allergies).
- Genetic or Biological Characteristics: Maturity, aging, genetic inheritance, or genetic diseases.
- Health System: Access to healthcare
Cultivation and Care of Soybeans, Corn, Wheat, and More
Soybeans
Soybeans are an annual grass. In the spring (for the first seven months) and summer (for the second three months).
- Shaft: Rigid and erect, 0.4 to 1.5 meters in height, usually branched, prone to lodging.
- Root System: Taproot up to 1 meter deep, where the nodules are located.
- Leaves: Alternate, trifoliate.
- Flowers: Racemose inflorescences found in varying numbers in the axils.
- Fruit: Dehiscent pod. Each fruit contains 3 to 4 seeds.
- Seed: Spherical, yellow with a black hilum. Rich in proteins and
Flower Anatomy: Sepals, Petals, Stamens, and Pistils
Flower Anatomy
First, there is a stalk (pedicel) which supports the flower. Some flowers may be without a stalk (sessile). The tip of the stalk may also be enlarged to form a cup-shaped receptacle or thalamus.
A flower is a specialized shoot in which the leaves are modified into floral structures.
The floral parts are borne on the thalamus in four whorls:
- First Whorl: Green sepals (collectively called calyx)
- Second Whorl: Large, brightly-colored petals (collectively called corolla).
- Third Whorl: Male
Cerebrovascular Accident (CVA): Types, Causes, and Mechanisms
Cerebrovascular Accident (CVA)
A Cerebrovascular Accident (CVA), also known as a stroke, has an impact characterized by a sudden focal neurological deficit that persists for at least 24 hours. It normally occurs in the encephalic circulation due to a lack of blood flow, and cells die, causing permanent damage to structures.
Risk Factors: Hypertension, hypercholesterolemia, diabetes, smoking, heavy drinking, and the use of oral contraceptives.
Pathophysiology
Vascular supply is related to the signs and
Read MoreMeiosis: Understanding Cell Division and Genetic Diversity
Meiosis involves two consecutive cell divisions, resulting in four haploid cells per diploid mother cell. These divisions occur in prophase, metaphase, anaphase, and telophase.
Meiotic Division 1
The fundamental difference between meiosis and mitosis takes place in prophase. Homologous chromosomes pair up and exchange hereditary material.
Prophase 1
- DNA filaments begin to condense, chromosomes become visible, and each chromosome is replicated into two chromatids.
- Homologous chromosomes pair lengthwise
Understanding Blood Vessels, Heart Function, and ECG
Blood Vessels: Structure and Function
There are three main classes of blood vessels: arteries, veins, and capillaries. Their primary function is to transport blood throughout the body. They are distinguished by the amount of muscle and elastic tissue in their walls.
Arteries
Arteries have stronger and thicker walls and are formed of three layers:
- Endothelium: Formed by epithelial tissue, it contains smooth muscle and elastic tissue.
- Outer layer: Composed of elastic tissue.
- Lumen: Fairly small but increases