HUBS 1403 - Biomedical Science Part 1

Vocabulary flashcards related to the key concepts of biomedical science and homeostasis.

Homeostasis

The stable internal environment in an organism achieved by balancing inputs and outputs.

Chemical Level

The simplest level of organization that includes atoms and molecules.

Cellular Level

The level of organization that consists of cells, the basic units of life.

Tissue Level

The level of organization where similar cells group together to form tissues.

Organ Level

The level of organization where different tissues combine to form organs.

System Level

The level of organization where different organs work together to perform complex functions.

Feedback System

A system that maintains homeostasis through receptors, control centers, and effectors.

Negative Feedback

A control mechanism that reverses the effect of a stimulus to maintain homeostasis.

Positive Feedback

A control mechanism that amplifies the effect of a stimulus in a biological process.

Molecule

A structure formed when two or more atoms bond together.

Atom

The smallest component of an element that retains the properties of that element.

Cation

A positively charged ion that forms when an atom loses electrons.

Anion

A negatively charged ion that forms when an atom gains electrons.

Polar Covalent Bond

A type of bond where electrons are shared unequally between atoms, resulting in a partial charge.

Hydrogen Bond

An attraction between a slightly positive hydrogen atom and a slightly negative atom, commonly oxygen or nitrogen.

Major Elements in the Body

Elements that make up about 96% of body mass, including oxygen, carbon, hydrogen, and nitrogen.

Lesser Elements

Elements that comprise about 3.6% of body mass, such as calcium, phosphorus, and potassium.