Coordination and Control in Biology Quiz

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12 Questions

What is the main difference between nervous coordination and chemical coordination?

Nervous coordination involves electrical signals, while chemical coordination involves the release of hormones.

Which part of the human eye is responsible for detecting color in bright light?

Cones

What is the main function of the hormone insulin?

To regulate blood sugar levels by converting glucose to glycogen.

Which structure is responsible for transmitting nerve impulses between neurons?

Synapse

What is the role of insulin when blood glucose concentration rises?

Decreases blood glucose concentration

How does the pancreas respond when blood glucose concentration drops below normal?

Secretes insulin

What are functional disorders related to in the context of nervous system disorders?

Disturbance in nerve impulse generation and transmission

Which type of disorder is characterized by the complete loss of function by one or more muscle groups?

Paralysis

What is the normal blood glucose level after 8-10 hours of fasting?

70 to 99 mg/100ml

Which hormone is responsible for the development of male secondary sex characteristics like growth of facial hair and vocal changes?

Testosterone

What type of feedback mechanism decreases or inhibits a process?

Negative feedback

What is the blood glucose diagnosis level after consuming a 75-gram glucose drink?

Less than 140 mg/100ml

Study Notes

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.

Test your knowledge on nervous and chemical coordination, components of coordination, reflex actions, reflex arcs, nerve impulse paths, pupil reflexes, role of vitamin A in vision, hormone definition, endocrine system, and other related terms.

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