Coordination and Control in Biology Quiz

Nervous and Chemical Coordination

• Nervous coordination involves electrical impulses transmitted through neurons, whereas chemical coordination involves hormonal signals transmitted through the bloodstream.

Human Eye Anatomy

• The cone cells in the human eye are responsible for detecting color in bright light.

Insulin and Blood Glucose Regulation

• The main function of the hormone insulin is to regulate blood glucose levels by facilitating glucose uptake in cells.
• When blood glucose concentration rises, insulin is released to stimulate glucose uptake in cells, thereby reducing blood glucose levels.

Neuron Structure and Function

• The synapse is the structure responsible for transmitting nerve impulses between neurons.

Pancreatic Response to Blood Glucose Levels

• When blood glucose concentration drops below normal, the pancreas responds by releasing glucagon, which stimulates the liver to release stored glucose (glycogen) into the bloodstream.

Nervous System Disorders

• Functional disorders related to the nervous system include neuropathy, myopathy, and dystonia.
• Paralysis is a type of disorder characterized by the complete loss of function by one or more muscle groups.

Blood Glucose Levels and Diagnosis

• The normal blood glucose level after 8-10 hours of fasting is less than 100 mg/dL.
• A blood glucose level of 200 mg/dL or higher after consuming a 75-gram glucose drink indicates diabetes.

Hormonal Regulation and Feedback Mechanisms

• Testosterone is the hormone responsible for the development of male secondary sex characteristics like growth of facial hair and vocal changes.
• A negative feedback mechanism decreases or inhibits a process, such as insulin reducing blood glucose levels.