1. What properties are shared by all types of epithelia
2. In cool weather, jackrabbits sometimes flatten their ears against their body. What advantage and disadvatage do you think this body posture offers lor survival?
3. WHAT IF? Suppose you are standing at the edge of a Cliff and suddenly slip you barely manage to keep your balance and avoid falling. As your heart races, you feel a burst of energy, due in part to a surge of blood into dilated(widened) vessels in your muscles and an upward spike in the level of glucose in your blood. Why might you expect that this"fight-or- flight" response requires both the nervous and endocrine systems?