Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

19. The Blood Vessels

Arteries

Anatomy & Physiology

19. The Blood Vessels

Arteries

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Problem 13

Textbook Question

The unpaired arteries supplying blood to the visceral organs include:
(a) The adrenal, renal, and lumbar arteries
(b) The iliac, gonadal, and femoral arteries
(c) The celiac and superior and inferior mesenteric arteries
(d) All of these

Verified step by step guidance

Step 1: Understand the anatomy of the unpaired arteries. Unpaired arteries are those that arise directly from the abdominal aorta and supply blood to visceral organs without having a paired counterpart on the opposite side of the body.

Step 2: Identify the major unpaired arteries in the abdominal region. These include the celiac artery, superior mesenteric artery, and inferior mesenteric artery. These arteries supply blood to the stomach, intestines, liver, pancreas, and other visceral organs.

Step 3: Review the paired arteries mentioned in the options. The adrenal, renal, lumbar, iliac, gonadal, and femoral arteries are paired arteries, meaning they exist on both sides of the body and are not considered unpaired.

Step 4: Compare the options provided in the question. Option (c) lists the celiac artery, superior mesenteric artery, and inferior mesenteric artery, which are unpaired arteries supplying blood to visceral organs.

Step 5: Conclude that the correct answer is based on identifying the unpaired arteries that supply visceral organs, as described in step 4.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Unpaired Arteries

Unpaired arteries are blood vessels that arise from the aorta and supply blood to specific organs or regions without a corresponding paired artery. In the context of visceral organs, these arteries are crucial for delivering oxygenated blood to structures such as the stomach, intestines, and other abdominal organs.

Visceral Organs

Visceral organs refer to the internal organs located within the main cavities of the body, particularly those in the abdominal cavity. These include the stomach, liver, intestines, and kidneys, which are vital for various bodily functions such as digestion, filtration, and metabolism.

Major Arteries Supplying the Abdomen

The major arteries supplying the abdomen include the celiac trunk, superior mesenteric artery, and inferior mesenteric artery. These arteries branch off from the abdominal aorta and are responsible for supplying blood to the majority of the digestive organs, making them essential for proper organ function and nutrient absorption.

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Textbook Question

The baroreceptors in the carotid sinus and aortic arch are sensitive to

a. a decrease in CO₂

b. changes in arterial pressure

c. a decrease in O₂

d. all of these

The myocardium receives its blood supply directly from the:

a. Aorta

b. Coronary arteries

c. Coronary sinus

d. Pulmonary arteries

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Textbook Question

Using the letters from column B, match the artery descriptions in column A. (Note that some require more than a single choice.)

Column A

____ (1) unpaired branch of abdominal aorta

____ (2) second branch of aortic arch

____ 3) branch of internal carotid

____ (4) branch of external carotid

____ (5) origin of femoral arteries

Column B

a. right common carotid

b. superior mesenteric

c. left common carotid

d. external iliac

e. inferior mesenteric

f. superficial temporal

g. celiac trunk

h. facial

i. ophthalmic

j. internal iliac

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Textbook Question

The two arteries formed by the division of the brachiocephalic trunk are the:

(a) Aorta and internal carotid

(b) Axillary and brachial

(d) Common carotid and subclavian

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Textbook Question

The paired arteries supplying blood to the body wall and other structures outside the abdominopelvic cavity include the:

a) Left gastric, hepatic, splenic, and phrenic arteries

(b) Adrenal, colic, lumbar, and gonadal arteries

(d) Celiac, left gastric, and superior and inferior mesenteric arteries

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Distinguish between elastic arteries, muscular arteries, and arterioles relative to location, histology, and functional adaptations.

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Textbook Question

A 60-year-old man is unable to walk more than 100 yards without experiencing severe pain in his left leg; the pain is relieved by resting for 5–10 minutes. He is told that the arteries of his leg are becoming occluded with fatty material and is advised to have the sympathetic nerves serving that body region severed. Explain how such surgery might help to relieve this man's problem.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Muscular arteries control blood flow at the tissue level.

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