Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

16. The Endocrine System

Membrane Bound Receptors and Secondary Messengers

Anatomy & Physiology

16. The Endocrine System

Membrane Bound Receptors and Secondary Messengers

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which type of membrane-bound receptor requires an effector protein to initiate a signal transduction pathway?

G protein-coupled receptor (GPCR)

Ion channel receptor

Intracellular receptor

Receptor tyrosine kinase

Previous problemNext problem

Verified step by step guidance

Understand the role of membrane-bound receptors in cell signaling. These receptors are proteins located on the cell membrane that receive signals from outside the cell and initiate a response inside the cell.

Identify the types of membrane-bound receptors listed: G protein-coupled receptor (GPCR), Ion channel receptor, and Receptor tyrosine kinase. Note that intracellular receptors are not membrane-bound as they are located inside the cell.

Learn about G protein-coupled receptors (GPCRs). These receptors interact with G proteins, which are intracellular proteins that act as molecular switches. When a GPCR is activated by a ligand, it undergoes a conformational change that allows it to activate an associated G protein.

Recognize that the activation of the G protein by the GPCR leads to the activation of an effector protein. The effector protein then generates a second messenger, which propagates the signal within the cell, leading to a cellular response.

Conclude that the G protein-coupled receptor (GPCR) is the type of membrane-bound receptor that requires an effector protein to initiate a signal transduction pathway, as it relies on the G protein to activate downstream signaling components.