Biology Assignment 12-Cell Regulation

_____ recognized the vital role of the internal environment and suggested that the objective of mechanisms within the body is to preserve the constant conditions of the internal environment.

Claude Bernard

_____ communicate with the body to ensure homeostasis.

Feedback loops

A balance must exist between substances entering and exiting cells. Most animals take in substances by _____.

breathing eating

a degree of organism complexity; either unicellular or colonial

cellular level

sensory receptors

detect changes of internal or external stimulus

self-regulation mechanisms that send information to appropriate physiological systems so that appropriate adjustments can be made

feedback loops

the relatively constant state in the internal environment of an organism

homeostasis

a control mechanism that inhibits or counteracts an earlier reaction

negative feedback

If you've been sitting in the hot Sun and start to sweat, your body responds from a _____.

negative feedback loop

_____ feedback stimulates your body to respond in the same direction as a stimulus.

positive

a control mechanism that intensifies or enhances an earlier reaction

positive feedback

effectors

respond to stimulus to maintain homeostasis

integrating center

sends signals to proper areas of the body regarding the stimulus

Structures in plant leaves that open and close to maintain homeostasis are called _____.

stomata

Starch and glycogen molecules are a means for a plant or animal cell to store _____ in order to help maintain homeostasis.

sugar

A balance must exist between substances entering and exiting cells. Most animals remove substances by _____.

sweating breathing urinating

a degree of organism complexity; cells arranged into systems

system level