6 Questions
Which system uses chemical impulses and transports hormones through the blood?
Endocrine system
What are two differences between the endocrine system and the nervous system?
The endocrine system is slow and involuntary, while the nervous system is fast and voluntary
What is known as the neuroendocrine gland and what does that mean?
Hypothalamus; it is used by both the endocrine and nervous system
Name 5 endocrine glands and their location.
Pancreas (abdomen), Pituitary gland (brain), Thyroid gland (neck), Adrenal glands (above the kidneys), Ovaries (female) or Testes (male)
What are the two classes of hormones?
Amino acid and steroid
What are the two mechanisms that hormones use to communicate with their target cell?
Plasma membrane and internal
Study Notes
Endocrine System
- The endocrine system uses chemical impulses and transports hormones through the blood.
Differences between Endocrine and Nervous Systems
- Two main differences between the endocrine system and the nervous system are:
- Speed of transmission: Nervous system transmits information quickly, whereas endocrine system transmits information slowly.
- Distance of transmission: Nervous system transmits information over short distances, whereas endocrine system transmits information over long distances.
Neuroendocrine Gland
- The pituitary gland is known as the neuroendocrine gland, meaning it has both nerve cells and hormone-producing cells.
Endocrine Glands
- Five endocrine glands and their locations are:
- Pituitary gland: base of the brain
- Thyroid gland: neck
- Adrenal gland: on top of the kidneys
- Pancreas: behind the stomach
- Pineal gland: between the two hemispheres of the brain
Classes of Hormones
- There are two main classes of hormones:
- Steroid hormones: derived from cholesterol
- Non-steroid hormones: derived from amino acids
Mechanisms of Hormone Communication
- Hormones communicate with their target cells through two mechanisms:
- Direct gene expression: hormones bind to receptors in the target cell, influencing gene expression
- Second messenger system: hormones bind to receptors on the surface of the target cell, triggering a signaling cascade that influences cellular activity
Test your knowledge on the differences between the endocrine system and the nervous system. Learn about their unique features such as the mode of communication, speed of response, and impact on target cells. Explore how hormones and nerve impulses play a crucial role in coordinating and integrating bodily functions.
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