(Ch. 6.2; Signaling pathways) Adrenergic receptors are those that respond to epinephrine. Beta adrenergic receptors are found on blood vessels in skeletal muscles. Increasing the concentration of epinephrine on blood vessels in skeletal muscles causes them to dilate. You did an experiment and changed the receptors in skeletal muscles to alpha adrenergic receptors, which are usually found in the intestines. With these modified skeletal muscles, you add epinephrine from tonic concentrations. You would expect the blood vessels to

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?