Transport Mechanisms in Biological Systems

These flashcards cover key vocabulary related to the transport mechanisms in biological systems, including topics on blood circulation, heart function, lymphatic systems, and plant water transportation.

Capillary Bed

A network of capillaries where the exchange of substances occurs between blood and tissue.

Tissue Fluid

The fluid that surrounds tissue cells, derived from blood plasma, that provides nutrients and removes waste.

Bulk Transport

The movement of fluids into and out of capillaries driven by pressure differences.

Pressure Filtration

The process by which blood plasma is pushed out of capillaries into the tissue due to blood pressure.

Lymphatic System

A network that drains excess tissue fluid and helps maintain fluid levels in the body.

Transpiration

The process of water evaporation from the leaves, creating negative pressure that draws water upward through the plant.

Myogenic Contraction

Heart muscle contraction that occurs without external stimuli from the nervous system.

Cardiac Cycle

The sequence of events that occur in the heart during one complete heartbeat.

Translocation

The movement of nutrients and sap within the phloem from source to sink.

Sieve Tube Elements

Living cells in the phloem that transport sap but lack a nucleus and most organelles.