Cardiovascular Disease

Question 1

What is the process that prevents bleeding when a blood vessel is damaged?

Answer 1

Blood clotting

This process involves a series of reactions to form a clot that acts as a plug.

Question 2

What is a thrombus?

Answer 2

A blood clot formed at the site of an atheroma

Thrombus formation is part of the pathology of cardiovascular disease (CVD).

Question 3

What inactive enzyme is converted into its active form, thrombin, during blood clotting?

Answer 3

Prothrombin

Thrombin plays a crucial role in converting fibrinogen into fibrin.

Question 4

What does thrombin convert fibrinogen into?

Answer 4

Fibrin

Fibrin forms a meshwork that traps blood platelets and cells to create a clot.

Question 5

What is the risk associated with a thrombus becoming dislodged?

Answer 5

It can form an embolus

An embolus can block blood flow to the heart, potentially resulting in a myocardial infarction (MI).

Question 6

Fill in the blank: The formation of a blood clot involves a meshwork that traps _______ and blood cells.

Answer 6

platelets

This meshwork is essential for creating a stable clot.

Question 7

What is the process that prevents bleeding when a blood vessel is damaged?

Answer 7

Blood clotting

This process involves a series of reactions to form a clot that acts as a plug.

Question 8

What is a thrombus?

Answer 8

A blood clot formed at the site of an atheroma

Thrombus formation is part of the pathology of cardiovascular disease (CVD).

Question 9

What inactive enzyme is converted into its active form, thrombin, during blood clotting?

Answer 9

Prothrombin

Thrombin plays a crucial role in converting fibrinogen into fibrin.

Question 10

What does thrombin convert fibrinogen into?

Answer 10

Fibrin

Fibrin forms a meshwork that traps blood platelets and cells to create a clot.

Question 11

What is the risk associated with a thrombus becoming dislodged?

Answer 11

It can form an embolus

An embolus can block blood flow to the heart, potentially resulting in a myocardial infarction (MI).

Question 12

Fill in the blank: The formation of a blood clot involves a meshwork that traps _______ and blood cells.

Answer 12

platelets

This meshwork is essential for creating a stable clot.

Question 13

What is Peripheral Vascular Disease (PVD)?

Answer 13

Occurs when damage caused by narrowing of arteries takes place distant from the heart or brain

One common form of PVD is deep vein thrombosis (DVT), where a blood clot forms in a deep vein, usually in a leg.

Question 14

What is deep vein thrombosis (DVT)?

Answer 14

A condition where a blood clot forms in a deep vein, usually in a leg

Pain results as the leg muscles have a decreased supply of oxygen.

Question 15

What can happen if part of a clot in DVT becomes detached?

Answer 15

It can form an embolus that may result in a pulmonary embolism

An embolus is a blood clot that travels through the bloodstream.

Question 16

What is cholesterol?

Answer 16

An insoluble lipid that forms part of an animal cell membrane

It is used to make sex hormones like testosterone, estrogen, and progesterone.

Question 17

Where is a quarter of all cholesterol production taking place?

Answer 17

In the liver

Cholesterol is made in all cells but primarily produced in the liver.

Question 18

What effect does a diet high in saturated fats have on cholesterol levels?

Answer 18

It increases cholesterol levels in the blood

Cholesterol is insoluble in blood and is transported by lipoproteins.

Question 19

What are the two types of lipoprotein carriers?

Answer 19

• Low-density lipoprotein (LDL)
• High-density lipoprotein (HDL)

LDL is considered bad, while HDL is considered good.

Question 20

Why is LDL considered bad?

Answer 20

It promotes the formation of atheroma and increases the risk of cardiovascular disease

High levels of LDL are linked to heart problems.

Question 21

What is the role of HDL?

Answer 21

Helps remove LDL from the arteries and carries it back to the liver for breakdown

HDL is believed to protect against heart attack and stroke.

Question 22

What happens when a cell has sufficient cholesterol?

Answer 22

A negative feedback system inhibits the synthesis of new LDL receptors

This leads to LDL circulating in the blood, potentially depositing cholesterol in arteries.

Question 23

What is the relationship between the ratio of HDL to LDL and blood cholesterol levels?

Answer 23

A higher ratio of HDL to LDL results in lower blood cholesterol and reduced chance of atherosclerosis

Maintaining a healthy balance of HDL and LDL is crucial for cardiovascular health.

Question 24

What is an embolus?

Answer 24

A blockage in a blood vessel caused by a clot or other material

An embolus can lead to serious health issues, including cardiovascular disease.

Question 25

What are the **health benefits** associated with regular physical activity and a low fat diet?

Answer 25

* Elevated HDL levels * Reduced risk of cardiovascular disease ## Footnote Current advice encourages reducing dietary fat intake and replacing saturated fats with unsaturated fats.

Question 26

What are **statins** commonly prescribed for?

Answer 26

To reduce blood cholesterol by inhibiting synthesis in liver cells ## Footnote Statins are widely used to manage high blood cholesterol levels.

Question 27

List ways to **reduce LDL levels** and increase HDL levels.

Answer 27

* Eat less animal fat * Consume more fish, nuts, plant spreads, and oils * Increase intake of fruits, whole grains, beans, and legumes * Engage in regular exercise * Quit smoking ## Footnote These lifestyle changes can significantly improve cholesterol levels.

Question 28

True or false: High blood cholesterol levels **increase the risk** of developing atheroma and coronary heart disease.

Answer 28

TRUE ## Footnote High cholesterol levels are linked to an increased risk of cardiovascular diseases.

Question 29

What genetic condition can cause **altered or reduced** LDL receptors?

Answer 29

Autosomal dominant mutation ## Footnote This mutation can lead to high levels of LDL cholesterol in the blood.

Question 30

What is the relationship between **high cholesterol levels** and cardiovascular disease?

Answer 30

High cholesterol levels can lead to atheroma and coronary heart disease ## Footnote Elevated LDL cholesterol is a significant risk factor for cardiovascular conditions.