moseskiithya

The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub your toe in the dark, estimate the time it takes the nerve impulse to travel to your brain.

Can someone help me with these answers? I am having a tough time.

1. Oxygen and carbon dioxide exchange takes place between blood and air in the lungs across the

2. Gravity can cause a decline in blood pressure

3. Changing the subject from a upright to a prone postition caused

4. When you breathe in

5. When the subject breathes through the tube (check all that apply)

1.) Where does gas exchange take place in the lungs?

2.) Does gaseous exchange occur across the walls of the airways(trachea, bronchi and bronchioles)?

1) 1.Be able to define homeostasis, and understand organism’s choices in maintaining homeostasis.


2) 1.Understand what osmoregulation is, and why it’s important. Understand what form Nitrogenous wastes are eliminated in different species.


3) 1.Know the main modes of osmoregulation (or conformation) in marine invertebrates, freshwater and marine fish, amphibians, and mammals.


4) 1.Understand the basic anatomy of the mammalian kidney, and the flow of urine during excretion. Understand the basic structure and function of the nephron. Know what happens in the Loop of Henle and which ions are exchanged in each portion.


5)Understand the differences between ectotherms and endotherms and which types of animals fall into each category. Understand how animals in each category deal with environmental temperature

Discuss how the cell is the fundamental unit of life