Admin Table of Contents
- 1 What is the direction of travel of blood in the aortic arches?
- 2 What is the correct sequence going from the outermost to the innermost layer of a blood vessel wall?
- 3 Which kind of vessel has the lowest blood velocity?
- 4 How the heart pumps blood step by step?
- 5 Where is the brachiocephalic artery located in the body?
- 6 Where does blood go after leaving the systemic circuit?
What is the direction of travel of blood in the aortic arches?
The arch of the aorta runs at first upward, backward, and to the left in front of the trachea; it is then directed backward on the left side of the trachea and finally passes downward on the left side of the body of the fourth thoracic vertebra.
Which blood vessels arises from the aortic arch and leads to the left arm quizlet?
Name three blood vessels that exit from the aortic arch. Brachiocephalic, Left common carotid artery, Left subclavian artery.
What is the pathway of the blood?
Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body.
What is the correct sequence going from the outermost to the innermost layer of a blood vessel wall?
Tunica interna is the innermost layer so it lies internally, tunica externa is the outermost layer of the heart and the tunica media is the middle layer. So, the sequence will be interna – media and the externa.
Which leg has main artery?
Femoral artery
The femoral artery is a large artery in the thigh and the main arterial supply to the thigh and leg….
| Femoral artery | |
|---|---|
| Source | External iliac artery |
What four arteries receive blood directly from the aortic arch?
The aortic arch is the segment of the aorta that helps distribute blood to the head and upper extremities via the brachiocephalic trunk, the left common carotid, and the left subclavian artery.
Which kind of vessel has the lowest blood velocity?
capillaries
Blood flow is slowest in the capillaries, which allows time for exchange of gases and nutrients.
What is the general name of a vessel that takes blood away from the heart?
The arteries (red) carry oxygen and nutrients away from your heart, to your body’s tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body’s tissues.
How the blood flows through the heart step by step?
Blood Flow Step by Step
- The blood first enters the right atrium.
- The blood then flows through the tricuspid valve into the right ventricle.
- When the heart beats, the ventricle pushes blood through the pulmonic valve into the pulmonary artery.
How the heart pumps blood step by step?
The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
When blood flow is restricted what organs of the body are affected?
When blockages develop in the coronary arteries, the restricted blood flow results in a lack of oxygen to the heart muscle. This condition is known as coronary artery disease. Insufficient blood flow to the heart muscle can lead to symptoms of chest pain (angina).
Is the sequence of layers of blood vessel wall from outside to inside?
The innermost layer is called the tunica intima. The muscular middle layer is called the tunica media, and the outermost layer is called the tunica adventitia.
Where is the brachiocephalic artery located in the body?
As you would expect based upon proximity to the heart, each of these vessels is classified as an elastic artery. The brachiocephalic artery is located only on the right side of the body; there is no corresponding artery on the left. The brachiocephalic artery branches into the right subclavian artery and the right common carotid artery.
Where does the iliac artery originate in the human body?
It arises from the left ventricle and eventually descends to the abdominal region, where it bifurcates at the level of the fourth lumbar vertebra into the two common iliac arteries.
How are vessels traced through one side of the body?
These pairs of vessels will be traced through only one side of the body. Where differences occur in branching patterns or when vessels are singular, this will be indicated. For example, you will find a pair of femoral arteries and a pair of femoral veins, with one vessel on each side of the body.
Where does blood go after leaving the systemic circuit?
Recall that blood returning from the systemic circuit enters the right atrium (Figure 20.5.2) via the superior and inferior venae cavae and the coronary sinus, which drains the blood supply of the heart muscle. These vessels will be described more fully later in this section.