Chapter 40 Basic Principles of Animal Form and Function

This set of flashcards covers key concepts related to the basic principles of animal form and function as discussed in Chapter 40, aiding in the understanding of biological systems.

Convergent Evolution

The evolutionary process where different species evolve similar traits to adapt to similar environments.

Metabolic Rate

The rate at which an organism uses energy; influenced by both body size and activity levels.

Endocrine System

The system of glands that produce hormones for slow, long-lasting signaling between cells.

Interstitial Fluid

A fluid that surrounds cells and acts as a medium for the exchange of substances between blood and cells.

Epithelial Tissue

A type of tissue that lines the surfaces and cavities of organs and structures throughout the body.

Connective Tissue

A type of tissue that supports, binds together, and protects tissues and organs of the body.

Homeostasis

The process by which biological systems maintain a stable internal environment despite external changes.

Negative Feedback

A regulatory mechanism in which an increase in a substance leads to a decrease in its production.

Basal Metabolic Rate (BMR)

The rate of energy expenditure per unit time of an organism at rest in a thermally neutral environment.

Surface Area-to-Volume Ratio

A measurement that describes the relationship between an object's size and its ability to exchange materials with its environment.

Acclimatization

The process in which an organism adjusts to changes in its environment, improving its tolerance to new conditions.

Homeostatic Control System

The network of sensors and effectors that maintain physiological parameters within a defined range.

Cardiac Muscle

Striated muscle tissue found only in the heart, characterized by involuntary control.

Smooth Muscle

A type of non-striated muscle that lines the walls of internal organs and is under involuntary control.

Nervous System

The system responsible for transmitting signals between different parts of the body through neurons.

Active Transport

The process of moving substances across cell membranes against their concentration gradient using energy.

Thermoregulation

The process by which animals maintain their body temperature within a normal range.

Basal Metabolic Rate (BMR)

The rate of energy expenditure per unit time by an endothermic animal at rest.

Torpor

A state of decreased physiological activity in an animal, characterized by a reduced metabolic rate.

Ectotherm

An animal that regulates its body temperature primarily through external thermal conditions.

Endotherm

An animal that can generate and maintain its body temperature primarily through metabolic activity.

Adipose Tissue

Connective tissue that stores fat, providing insulation and cushioning.

Fibrous Connective Tissue

A type of connective tissue that is composed mainly of collagen fibers.

Countercurrent Exchange

A mechanism where two fluids flow in opposite directions to maximize heat or solute exchange.

Osmoregulation

The process by which organisms regulate the water and salt balance in their bodies.

Hydrolysis

The chemical breakdown of compounds due to reaction with water.

Digestion

The metabolic process of breaking down food into nutrients the body can use.

Ingestion

The act of taking food and liquids into the body through the mouth.

Absorption

The process by which the products of digestion move into the bloodstream.

Fluid Feeders

Organisms that obtain nutrients by sucking or absorbing fluid from a host.