Endocrine System: Hormones and Glands in the Human Body
Endocrine Regulation
The proper functioning of our body is due to the joint coordination of two mechanisms: nervous control and hormonal control. The first is through the action of the nervous system in three sections: central, peripheral, and autonomic. The central control takes place through the action of a group of organs called endocrine glands and internal secretion, which produce chemicals called hormones.
Meaning and Origin of Gland
A gland is an organ whose cells are specialized in the production
Read MoreChemical Bonds: Covalent, Ionic, and Metallic Explained
Unit 5: Chemical Bonding
1. Introduction
The things around us are made up of different atoms that have been joined together.
1.1. What Happens When Atoms Bond?
A chemical bond is formed when atoms are held together by attractive forces. A chemical bond is the physical process that causes atoms and molecules to be attracted to each other and held together in more stable chemical compounds. There are three types of chemical bonds: covalent, ionic, and metallic bonding.
1.2. Lewis Structures
Lewis notation
Read MoreHuman Reasoning and Emotions: Logos, Rationality, and Personhood
Reasoning and Feelings
1. Logos as the Human Essence
- Logos, the ability to understand and explain reality, is the defining characteristic of humans.
- It involves using language to discuss concepts.
- Logos enables us to live in society because we share a common language.
- Wisdom involves analyzing and deciding what is good in the world, guided by knowledge or agreement.
2. Reason and Rationality
The word “reason” is used in many different ways. As Kant said, there are different uses of reason. Today, rationality
Read MoreCirculatory and Excretory Systems: Functions and Anatomy
What is the Circulatory System?
The circulatory system is responsible for carrying the products of digestion and oxygen obtained through the respiratory system to all the cells of the body. It also collects waste products and takes them to the excretory system where they will be eliminated.
What Organs Form the Circulatory System?
It is formed by a central body called the heart and blood vessels (arteries, veins, and capillaries).
How is the Heart Shaped?
The heart is a hollow organ composed of muscle
Read MoreSan Juan de Baños: Visigothic Church in Palencia, Spain
San Juan de Baños: A Visigothic Architectural Gem
The church of San Juan de Baños features a basilica with three naves and three apses, although only the central apse is authentic. Over the years, it has undergone partial reconstructions, even affecting the original layout. The original plan was widened up to the fourth and final arch, forming a transept that opened onto a triple header consisting of three rectangular chapels. After reconstruction, the side apses disappeared, and the plan was converted
Understanding Spanish Grammar: Direct, Indirect Objects & More
Direct Object (DO)
A direct object (complemento directo or CD) is a noun or noun phrase that complements a transitive verb. When it refers to people, it is preceded by the preposition “a”. The direct object usually follows the verb, but Castilian allows for variations. In such cases, the direct object pronoun (lo, la, los, las) is repeated.
Example: I found the girl at home.
Indirect Object (IO)
An indirect object (complemento indirecto or CI) is a prepositional phrase that refers to the entity that
Read MoreChina’s Economic Rise: Deng’s Reforms and Their Impact
Theme II: The Development of the Global Economy
6. The Rise of China
I. Deng’s Reforms
- Household Responsibility System (HRS)
- Introduced in 1978
- A significant, though not complete, abandonment of the collectivization system under Mao
- Farming households were free to dispose of any surplus produce on the open market once production targets were met
- First major reform, setting the stage for other future reforms
- Allowed for an increased role for market forces
- Rural production rose, became self-sufficient in grain
Romanization of the Iberian Peninsula: Integration & Impact
Romanization of the Iberian Peninsula
The Romanization of the Iberian Peninsula was a process of dominance and military control that lasted from 218 BC to 19 BC, ultimately achieving the full integration of Hispanic territory into the Roman Empire. The Iberian Peninsula served as a crucial supply route for the Carthaginian army, prompting Rome’s decision to conquer it. The initial Roman military presence began in 218 BC under the command of Scipio. By 202 BC, the Romans had defeated the Carthaginians
Read MoreItalian Political Landscape: Parties, Coalitions, and Key Players
Silvio Berlusconi’s 2001 Victory and its Impact on Italian Legislation
Silvio Berlusconi’s victory in 2001 and his return to the Presidency of the Council led to legislation that shielded against judicial initiatives, hampered collaboration between Italian judges and other countries, and softened the criminalization of corporate crimes that affected him personally.
The Northern League: A History and its Political Stance
The Northern League emerged in 1990 from the merger of several autonomist leagues.
Read MorePlato: Life, Philosophy, and Influence on Western Culture
Plato: Life and Philosophical Journey
Plato was born in Athens in the 5th century BC. His life was profoundly influenced by his relationship with his teacher, Socrates. Socrates’ death, a conviction in which Plato’s uncles Charmides and Critias were involved, at the hands of democracy significantly impacted Plato’s rejection of it. Politically, his work aimed to develop an ideal model of society, an aristocracy, to avoid the perceived evils of democracy and other political systems, which he considered
Read More