Homeostasis and Haemodynamics Quiz

<p>Blood pressure. (C)</p> Signup and view all the answers

<p>Neural regulation acts through nerves, hormonal through blood. (A)</p> Signup and view all the answers

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

<p>To optimize the functional efficiency of bodily systems. (A)</p> Signup and view all the answers

<p>It can disrupt normal limits and trigger compensatory mechanisms. (C)</p> Signup and view all the answers

<p>Specific tissue requirements (C)</p> Signup and view all the answers

<p>Velocity is inversely proportional to the cross-sectional area (D)</p> Signup and view all the answers

<p>CO = Heart rate × Stroke volume (C)</p> Signup and view all the answers

<p>Increased blood viscosity (B)</p> Signup and view all the answers

<p>Control systemic vascular resistance (B)</p> Signup and view all the answers

<p>Renin-angiotensin-aldosterone system (C)</p> Signup and view all the answers

<p>Detect changes in arterial blood pressure (C)</p> Signup and view all the answers

<p>MAP = CO × systemic vascular resistance (C)</p> Signup and view all the answers

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

<p>Increases systemic vascular resistance (D)</p> Signup and view all the answers

<p>Controls blood vessel constriction and dilation (D)</p> Signup and view all the answers

<p>Blood flow decreases (B)</p> Signup and view all the answers

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

<p>It increases blood pressure (A)</p> Signup and view all the answers

The maintenance of a stable internal environment within a living organism, despite external changes.

Blood pressure, body temperature, blood sugar levels, and pH balance are all examples of conditions that are regulated by homeostasis.

A network of interconnected components that detect changes in the internal environment, process the information, and trigger appropriate responses to restore balance.

Sensory receptors that detect changes in the internal environment.

The central processing unit that receives signals from receptors, analyzes the information, and initiates a response.

The organs and tissues that carry out the response to restore balance.

The flow of blood through the circulatory system.

Arterial blood pressure, blood vessel resistance, and blood volume are all factors that contribute to blood flow.

The amount of blood that flows through a specific tissue in a given amount of time. It's measured in milliliters per minute (mL/min).

The speed at which blood moves through a blood vessel. It's inversely proportional to the vessel's cross-sectional area.

The process of blood flowing through blood vessels. It's influenced by factors like blood pressure, resistance, and vessel size.

The total volume of blood that the heart pumps out per minute. It's a key indicator of heart function.

The amount of blood ejected from the left ventricle of the heart with each heartbeat.

The difference in pressure between the beginning and end of a blood vessel that drives blood flow. Higher pressure difference leads to faster blood flow.

The resistance to blood flow encountered within blood vessels. It's influenced by vessel size, viscosity, and length.

The size of the inside of a blood vessel. A smaller lumen results in higher resistance and slower blood flow.

The thickness of the blood. Higher viscosity leads to higher resistance and slower blood flow.

The length of a blood vessel. Longer vessels have higher resistance because they have more surface area for friction.

The total resistance to blood flow offered by all the blood vessels in the systemic circulation. Arterioles play a major role.

The average pressure of blood flowing through the arteries. It's a good indicator of overall blood pressure.

The specialized control center in the medulla oblongata of the brain that regulates blood pressure through neural and hormonal mechanisms.

Sensory receptors in the aorta and carotid arteries that detect changes in blood pressure and send signals to the CVC.

A hormonal system that plays a major role in regulating blood pressure. It involves renin, angiotensin, and aldosterone.

A hormone released by the adrenal glands that causes the kidneys to retain sodium and water, leading to increased blood volume and pressure.

A hormone released by the pituitary gland that causes the kidneys to retain water, leading to increased blood volume and pressure.