Question

1.Place the following in sequence, following the flow of blood: (1) central vein drains into hepatic vein, (2) blood moves into sinusoids, (3) some blood flows into perisinusouidal spaces, (4) hepatic portal vein, (5) Kuppfer cells kill bacteria and other invaders

2.

Why does a newborn’s first breath require a great deal of energy?

		A large amount of energy is not required because the lungs are already working
		Because the foramen ovale and ductus venosus have not yet closed
		Requires a huge amount of negative pressure to inflate the deflated alveoli
		Because the lungs have not yet developed
		Because the liver and kidneys are not yet fully mature, and the hemoglobin is different

3.

In what region of the body does aldosterone cause the body to eliminate potassium ions?

		Gallbladder
		Duodenum
		Adrenal gland
		Nephron
		Hypothalamus

4.

What is the role of NAD+?

		Allows hemoglobin molecules to carry more oxygen
		Accepts electrons at the end of the electron transport chain
		Permits phosphate groups to attach to ADP, synthesizing ATP
		Carries two electrons (and a hydrogen ion) to the electron transport chain
		Breaks down sugar molecules into ATP molecules

Answer 1

1).Hepatal Portal vein -->sinusoids-->kupffer cells ---> perisinusoidal spaces --> central vein -->hepatic vein

2. Requires a huge amount of negative pressure to inflate the deflated alveoli

At birth babys alveoli are deflated, probably because less amount of pulmonary surfactant and is filed with fluids,because of which it requires huge amount of negative pressure to deflat the alveoli

3.Nephron

Aldosterone released by adrenal gland acts on the nephron, to reabsorb water and sodium at the same time excrete potassium, this results increase in blood volume and blood pressure.

4.. Carries two electrons (and a hydrogen ion) to the electron transport chain

NAD+ accepts a hydrogen ion (H+) and two electrons (2e−), as it becomes reduced to NADH + H+. The NADH moves to the electron transport chain and donates a pair of electrons (becomes oxidized) to the first compound in the chain.