Histology of Cardiac Muscle & Blood Vessels

<p>Arteries have thicker walls than veins (C)</p> Signup and view all the answers

<p>Sinusoidal capillaries (C)</p> Signup and view all the answers

<p>Myocardium (B)</p> Signup and view all the answers

<p>Facilitating the exchange of substances between blood and tissues (A)</p> Signup and view all the answers

<p>A series of finger-like projections that connect adjacent cardiac muscle cells (B)</p> Signup and view all the answers

<p>Veins (D)</p> Signup and view all the answers

<p>It is responsible for regulating blood pressure (D)</p> Signup and view all the answers

<p>To connect the endocardium to the myocardium (D)</p> Signup and view all the answers

<p>Arteries (A)</p> Signup and view all the answers

<p>To provide a smooth, non-thrombogenic lining for blood vessels (B)</p> Signup and view all the answers

<p>Arteries have a thicker tunica media with more layers of smooth muscle, while veins have a thinner tunica media with less smooth muscle. (A)</p> Signup and view all the answers

<p>To provide structural support and prevent the artery from collapsing. (D)</p> Signup and view all the answers

<p>To supply blood to the walls of large blood vessels. (A)</p> Signup and view all the answers

<p>External elastic lamina (B)</p> Signup and view all the answers

<p>To regulate the flow of blood through the capillaries. (D)</p> Signup and view all the answers

<p>Collagen fibers (C)</p> Signup and view all the answers

<p>To prevent the backflow of blood in the vein. (B)</p> Signup and view all the answers

<p>Gap junctions (C)</p> Signup and view all the answers

<p>To facilitate the exchange of nutrients and waste products between the blood and the surrounding tissues. (B)</p> Signup and view all the answers

<p>Epicardium (C)</p> Signup and view all the answers

<p>To separate the tunica intima from the tunica media (A)</p> Signup and view all the answers

<p>Smooth muscle cells (D)</p> Signup and view all the answers

<p>Arteries have a thicker tunica media, while veins have a thicker tunica adventitia. (A)</p> Signup and view all the answers

<p>Muscular capillaries (A)</p> Signup and view all the answers

<p>They are found in the transverse regions of the intercalated disc, where desmosomes are abundant. (B)</p> Signup and view all the answers

<p>To provide energy for muscle contraction. (A)</p> Signup and view all the answers

<p>They lack an internal elastic lamina. (C), They have a thin tunica media with few layers of smooth muscle. (D)</p> Signup and view all the answers

<p>Capillaries and postcapillary venules (D)</p> Signup and view all the answers

<p>Fenestrated capillaries have a discontinuous basal lamina, while continuous capillaries have a continuous basal lamina. (D)</p> Signup and view all the answers

<p>Their endothelial cells form a continuous layer. (A)</p> Signup and view all the answers

<p>Tunica adventitia (C)</p> Signup and view all the answers

<p>To prevent backflow of blood (A)</p> Signup and view all the answers

<p>Large arteries have a thicker tunica media with more elastic laminae than large veins. (D)</p> Signup and view all the answers

<p>They are similar structurally to capillaries, lacking a tunica media and adventitia. (B)</p> Signup and view all the answers

<p>Smooth muscle cells (A)</p> Signup and view all the answers

<p>Large arteries have a thinner tunica intima than large veins. (A)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>To transport nutrients and oxygen to the vessel wall (A)</p> Signup and view all the answers

<p>Cholesterol-laden macrophages (A)</p> Signup and view all the answers

<p>They are subject to constant pressure and stress from the heart's pumping action (D)</p> Signup and view all the answers

<p>A balloon-like bulge in the wall of a blood vessel (A)</p> Signup and view all the answers

<p>Tunica media (D)</p> Signup and view all the answers

<p>Muscular arteries (B)</p> Signup and view all the answers

<p>To provide structural support and elasticity to the vessel wall (B)</p> Signup and view all the answers

Blood vessels that transport blood away from the heart, getting smaller as they branch.

Blood vessels that carry blood toward the heart, formed by converging capillaries that enlarge.

The smallest blood vessels that connect arteries and veins, allowing exchange between blood and tissues.

The internal layer of the heart, consisting of endothelial cells and connective tissue.

The thick middle layer of the heart made of cardiac muscle cells, responsible for contraction.

The external layer of the heart, also known as the visceral layer of serous pericardium.

Specialized junctions between cardiac muscle cells that allow for synchronized contractions.

Specialized fibers in the heart that conduct impulses, helping regulate heartbeat.

Structures in intercalated discs that anchor cardiac cells together.

Channels in intercalated discs that allow ionic continuity between cardiac cells.

A functional network of cardiac muscle cells that work together like a single unit.

The inner layer of blood vessels, consisting of endothelial cells and connective tissue.

The middle layer of blood vessels, composed of smooth muscle and elastic fibers.

The outer layer of blood vessels, providing structure and support.

Small blood vessels supplying nutrients to larger blood vessels' walls.

Nerves providing autonomic function to blood vessel walls.

Condition characterized by thickening of the vessel wall and cholesterol deposits.

Localized, blood-filled bulge in a blood vessel wall due to weakness.

Artery type with a large tunica media primarily composed of elastic fibers.

A layer of elastic tissue in blood vessel walls, primarily found in arteries.

Small blood vessels that lead from arteries to capillaries, usually have 1 or 2 layers of smooth muscle.

A small branch of an arteriole that leads directly into capillary beds and regulates blood flow through sphincters.

Veins such as vena cavae and portal veins, have a thick tunica adventitia and a smaller tunica media ratio.

A thin layer of connective tissue beneath the endothelium in blood vessels, may be absent in small vessels.

The microscopic arrangement of fibers in cardiac muscle including striations, intercalated discs, and branching.

The heart pumps blood throughout the body, playing a crucial role in circulation.

Various blood vessels include arteries, veins, and capillaries, each with unique structures and functions.

Arteries have thicker walls and carry oxygenated blood; veins have thinner walls and carry deoxygenated blood back to the heart.

Capillaries are small, thin-walled vessels that facilitate exchange of substances between blood and tissues.

Veins with endothelium, thin connective tissue, and valves.

Small venules with only endothelium, some surrounded by pericytes.

Collecting venules with recognizable tunica media and smooth muscle layers.

Most common type of capillary with uninterrupted endothelial cells.

Capillaries with small openings allowing for filtration, found in kidneys and glands.

Highly permeable blood vessels in liver and spleen with large gaps between endothelial cells.

Tissue with abundance of collagen and elastic fibers found in large veins.