Why do blood platelets have a role in the shrinkage of small blood vessels?

Q: What is thrombolysis?

A: Those blood vessels that supply “oxygenated blood” to the body tissues from the heart are called…

Q: Diagram the clotting pathway beginning with prothrombin?

A: The accumulation of the blood due to internal bleeding in this tissue is known as a hematoma. Red…

Q: How is blood flow carried on in the human body?

A: The heart is a pump and generally beats about 60 to 100 times per minute. The heart sends blood to…

Q: Do the Fibrin form the bridges between aggregating platelets? How?

A: Platelets aggregation:                 ADP [Adenosine diphosphate] is released during the platelet…

Q: From which cell type do all leukocytes derive?

A: Leukocytes are the blood cells that are present throughout the human body. They protect the body…

Q: What structural features of capillaries allow the exchange of materials between blood and body…

A: Blood is an important body fluid present in humans and other animals that will deliver essential…

Q: What is the major function of erythrocytes?

A: A cell that contains haemoglobin, and are concave at both sides enucleate RBC, which is responsible…

Q: What are clotting factors?

A: Blood clotting, or coagulation is an important process, which prevents excessive bleeding when a…

Q: What is the shape of each kind of blood cell? How is this shape important to the function of the…

A: Cell is the basic structural and functional unit of life. It was first discovered by Robert Hooke in…

Q: Explain the structure and function of platelets.

A: Blood is mainly composed of three types of cellular components namely : RBC's (red blood cells)…

Q: What are blood stem cells?

A: Blood is the chief circulating medium in the body. It plays a vital role in transporting all the…

Q: What are the progenitor cells for platelets?

A: Megakaryocyte are progenitor cell of platelets and these arise from the myeloid progenitor cell…

Q: What is the production of platelets controlled by?

A: The platelets are the anucleate cell varying in their shape at a great extent but usually they are…

Q: List the two clotting pathways?

A: Two Clotting Pathways are : Intrinsic pathway : Contact pathway. Extrinsic pathway : Tissue…

Q: What is the role of the leukocytes?

A: Leukocytes or white blood cells are specialized cells that are found in blood as well as the lymph…

Q: What are the progenitors of platelets and how do they form

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: How do platelets look different from other types of blood cell?

A: Platelets: - These are colorless cell fragment, having granular cytoplasm. It's main function is…

Q: What do you mean by double circulation of blood?

A: The heart is a muscular organ which pumps blood through the blood vessels of the circulatory system.…

Q: How do platelets and factors of the clotting cascade contribute to hemostasis?

A: Animal physiology is the systematic study of the supporting features, roles, and processes of…

Q: Do blood donors have their blood counts taken? Why or why not?

A: A complete blood count, also referred as a full blood count, is a series of clinical lab tests which…

Q: What else happens due to the activation and aggregation of platelets?

A: The cells are the primary unit of life. Based on the number of cells an organism may be prokaryotic…

Q: What are erythrocytes?

A: The blood cell, called a hematopoietic cell, is a cell that has been formed by hematopoiesis, which…

Q: Describe the structure of blood platelets?

A: Our bone marrow, the sponge-like tissue within our bones, produces platelets and thrombocytes. Stem…

Q: What does thrombin do?

A: Thrombin is a unique molecule which acts as both Anticoagulant and Procoagulant.

Q: What do you mean by clotting of blood?

A: The clotting of blood is an advantageous as well as a harmful process. If blood do not exhibits the…

Q: Why do we have blood cell in our body? What do we need them for?

A: Given: We have blood cell in our body. Blood is a fluid connective tissue.Blood consists of a fluid…

Q: What would happen if there were a shortage of fibrinogen in the blood?

A: According to the question, we have to mention what would happen if there were a shortage of…

Q: Why blood does not clot in blood vessels?

A: Blood is a body fluid in humans and other animals. It delivers necessary substances such as oxygen…

Q: Which white blood cell is the most abundant in the human body?

A: Answer: WHITE BLOOD CELLS : These are the cells present in body which are responsible for immune…

Q: What is the colour of blood platelets?

A: Platelets are small, colorless cell fragments in the blood, which form clots and prevent bleeding.…

Q: Briefly describe the origin, structure, and functions of platelets.

A: Platelets or thrombocytes are small and colorless broken parts of cells which help in clotting to…

Q: What is the function of platelets?

A: Platelets, also called thrombocytes, are a component of blood. Platelets have no cell nucleus; and…

Q: What are comparitive features of different types of leucocytes?

A: White blood corpuscles (WBCs), also called as leucocytes are the cells of the immune system, which…

Q: What are the two major roles of platelets in preventingblood loss?

A: The blood cell is also called a hematopoietic cell. It is produced by the process named…

Q: What is the importance of coagulation time?

A: Clotting time is the time required for the  clot to form in vitro. Normal range of clotting time is…

Q: Which vessel will contain the smallest number of red blood cells per unit volume of blood?

A: Blood vessels are components of the circulatory system that transport blood throughout the human…

Q: Explain the role of platelets in forming a blood clot.

A: Platelets are small blood cells that help the body to form clots in order to stop bleeding. Signals…

Q: How and where are platelets made? (Thrombocytes)

A: The blood is fluid tissue that circulates throughout the body and delivers all the essential…

Q: Describe how aspirin affects the action of platelets.

A: Platelets are small, colorless fragments that form clots and prevent excess bleeding. These are…

Q: What is the life span of blood platelets?

A: The blood is a fluid connective tissue formed of liquid portion plasma, and the solid portion called…

Q: What are the functions of blood platelets?

A: Blood is a specialized connective tissue composed of two components plasma and formed elements.…

Q: Which molecule is secreted by platelets and can activate platelets

A: Blood is the most abundant extracellular fluid in the human body. It circulates with in the blood…

Q: How are blood platelets formed?

A: Hematopoiesis is the production of all of the cellular components of blood and blood plasma. It…

Q: What is the main function of an erythrocyte, and in what ways is an erythrocyte designed to…

A: Blood is a bodily fluid in humans and other species that transfers metabolic waste products away…

Q: What is the general function of platelets, and what is their life span?

A: Blood is the red-colored fluid in the body. It flows through blood vessels and connects the heart…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: