Endocrine
Are found closest to the heart and are the largest arteries in the body. Examples of elastic arteries include the aorta, the pulmonary trunk, and the major early branches off the aorta
Elastic Artery
AKA the posterior pituitary; is an extension of the brain tissue in the hypothalamus.
Neurohypophysis
The inner layer, is composed of an outer parietal layer, which adheres to the fibrous pericardium, and an inner visceral layer (also called the epicardium), which forms the outer layer of the heart wall.
Serous Pericardium
Is the pointy inferior tip that points to the left side of the body and rests on the diaphragm.
Apex (of heart)
Carry oxygen-rich blood away from the heart and deliver it to the body’s organs and tissue. As arteries travel throughout the body, they branch into progressively smaller vessels.
Artery
medium-sized vessels that account for most of the vessels in the body. Their diameter is smaller than elastic arteries.
Muscular Artery
Hypothalamic hormones are sent directly to the anterior pituitary via a system of blood vessels called the?
Hypophyseal Portal System
The outer layer (also called the visceral layer of the serous pericardium), composed of simple squamous epithelium, areolar connective tissue, and adipose tissue.
Epicardium
The leaflets of both valves are attached by string-like structures or heart strings, to the nipple-shaped papillary muscles in the wall of the ventricle.
Receive blood from the venules and return blood to the heart via the superior or inferior vena cava.
Veins
AKA the pituitary gland, is located in the sphenoid bone, inferior to the hypothalamus.
Hypophysis
Groups of cells in your pancreas and contains several types of cells, including beta cells that make the hormone insulin.
Pancreatic Islet
The middle layer, composed of cardiac muscle tissue.
Myocardium
Composed of endothelium (a specialized thin layer of flattened cells that is continuous with the endothelium in the heart) anchored to a thin basement membrane. The simple squamous endothelial cells create a smooth inner surface lining of the blood vessel that helps prevent cells in the blood from sticking to it and creates smooth blood flow.
Tunica Intima
Are tiny vessels that deliver blood into the capillary networks throughout the body. All three layers of the vessel wall are thin. The very large number of arterioles in the body means that constriction and dilation of these vessels contributes substantially to the overall blood pressure.
Arteriole
The hypothalamus is connected to the pituitary gland by the?
Infundibulum
Is used to inhibit further hormone secretion: when a sufficient amount of hormone is released, it “feeds back” to decrease or prevent further release.
Negative Feedback
The inner layer, composed of simple squamous epithelium on a layer of areolar connective tissue.
Endocardium
Middle layer of the vessel walls of all arteries and veins, composed of smooth muscle and elastic fibers. The smooth muscle fibers are arranged circularly around the vessel wall: constriction of these fibers decreases the diameter of the vessel. The elastic fibers allow the vessel wall to stretch and recoil in response to the pressure of the blood inside
Tunica Media
Are microscopic vessels where gas exchange occurs between the blood and tissue cells. Capillaries contain only a thin layer of tunica intima.
Capillary
AKA the anterior pituitary; is true glandular tissue; hormones are secreted, stored and released from the cells.
Adenohypophysis
The outer layer is composed of dense irregular connective tissue.
Fibrous Pericardium
The heart is approximately the size of a fist, and is located in the middle region of the thoracic cavity in a space called the?
Mediastinum
The vessel walls of all arteries and veins, Outer tunic, composed of connective tissue with collagen and elastic fibers. It anchors the wall of the vessel to the surrounding tissues. In large vessels, the tunica externa is the site of nerves and tiny blood vessels that supply blood to the tissues in the vessel wall (the vasa vasorum, or “vessel of the vessel”). The vasa vasorum are analogous to the coronary vessels of the heart: both provide oxygenated blood to the organs of the cardiovascular system.
Tunica Externa
Are the smallest veins and receive blood from capillary beds in tissues and organs. The layers of the vessel wall are thin and distensible, making them reservoirs for the blood in the body.
Venule