Homeostasis, Feedback Control, Animal & Plant Hormones

This set of flashcards covers key concepts related to homeostasis, endocrine regulation, feedback control mechanisms, and plant hormone responses.

Homeostasis

The ability to maintain a steady state regardless of external environment.

Endocrine System

Glands, tissues, and organs that regulate bodily functions via hormones.

Stimulus

Any external factor that elicits a response in an organism.

Negative Feedback

A process that inhibits a response by reducing the initial stimulus.

Positive Feedback

A process that reinforces a stimulus to produce an even greater response.

Neuroendocrine Pathway

A pathway where nerve signals are converted into hormones, affecting target cells.

Oxytocin

A hormone that triggers milk release in mammals during suckling.

Glucagon

A hormone secreted by the pancreas that promotes the breakdown of glycogen and release of glucose into the blood.

Tropic Hormones

Hormones secreted by the anterior pituitary that target other glands.

Gibberellins

Plant hormones involved in regulating growth processes such as germination.

Auxin

A plant hormone that promotes cell elongation and coordinates growth responses.

Abscisic Acid (ABA)

A plant hormone that antagonizes growth hormones and promotes stress tolerance.

Ethylene

A plant hormone that mediates responses to mechanical stress and ripening.

Cytokinins

Plant hormones that stimulate cell division and differentiation.

Signal Transduction Pathway

The process by which a cell converts an external signal into a functional response.

Tropism

Any response resulting in the curvature of plant organs toward or away from a stimulus.

Feedback Regulation

The process by which the output of a system affects its input, often in a loop.