The lymph is moved through the body in its own vessels making a one-way journey from the interstitial spaces to the subclavian veins at the base of the neck. Since the lymphatic system does not have a heart to pump it, its upward movement depends on the motions of the muscle and joint pumps.
The answer is 1. domain, 2. kingdom, 3. phylum/division, 4. class, 5.
order, 6. family, 7. genus and 8. species. From largest (first) to
smallest (eighth) taxa, the order is following: domain, kingdom,
phylum/division, class, order, family, genus and species. Taxonomic
groups, or taxa, are used for biological classification. For example,
for human, the classification will look like this: 1. Domain: Eukarya;
2. Kingdom: Animalia; 3. Phylum: Chordata; 4. Class: Mammalia; 5. Order:
Primates; 6. Family: Hominidae; 7. Genus: Homo; 8. Species: Homo
sapiens.
Demonstrative pronoun is the answer.
Answer:
- Blood travels at a higher velocity in arteries than in veins.
- The volume of blood flow in the arteries and arterioles is greater than the volume of blood flow through the capillaries
- Blood pressure is higher in arteries than in veins.
- The total cross-sectional area of the capillaries is greater than the total cross-sectional area of the venules and veins
Explanation:
The lumen of arteries is larger than that of arterioles and capillaries. However, even though they have a smaller lumen compared to veins, their walls are thicker to bear the pressure of the blood as it is pumped by the heart to the tissues. Therefore the blood pressure and velocity of blood in arteries (that pump blood away from the heart) is higher than in capillaries and veins. Veins take blood back to the heart from tissues hence this blood is under lower pressure and velocity. This is why veins have valves to prevent the back-flow of blood against gravity.
Due to the large cross-section area of capillaries the blood flow is here is slower hence giving time for blood to linger a bit so there is an exchange of materials between the blood plasma and the interstitial fluids that nourish the cells.
B. The two groups share a relatively recent common ancestor.
(A. Cannot be true because human and monkeys are not that closely related
C. Cannot be true because it is not explicitly indicated by the DNA evidence provided by the excerpt
D. Cannot be true because monkeys would be extinct if human replaced them)
