Frequently Asked Question for Class 11th,12th, and NEET students (Skull and Cervical Vertebrae 2)
Question . Which part of the sphenoid bone ossifies by intramembranous ossification?
Ans: Lesser wing
December 2024
Joints: Meaning, Fibrous (or Immovable) Joints, Cartilaginous Joints, Synovial Joints, Ball-and-Socket Joints, Hinge Joints and Compound Joints
A joint or place of articulation is the location where two or more skeleton bones are joined to one another.
When two or more bones in the body come into close contact with one another and are joined by ligaments or cartilage, the result is a joint or place of articulation.
Frequently Asked Question for Class 11th ,12th, and NEET students (Skull)
Question: What is the strongest bone among the bones of the face?
Answer: Mandibular
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Thrombocytes (Platelets): Vascular spasm, Platelets plug formation, Coagulation (blood clotting)
Blood platelets are disc-shaped, non-nucleated cell fragments that range in diameter from 2 to 4 µm. In actuality, platelets are not cells. They come from fragments of the cytoplasm of megakaryocytes that live in the red bone marrow.
White blood cells (WBC) Leucocytes: Types , Neutrophil, Eosinophils, Basophils, Lymphocyte, Monocytes
WBCs are the largest blood cells. Leucocytes make up only over 1% of the blood volume, Leucocytes and erythrocytes differ in several ways:
1. Each leucocyte has a nucleus, mitochondria, and other organelles, proving that they are actual cells.
2. There is no Hb in them.
3. Erythrocytes are not movable, although leucocytes are.
4. Leucocytes can exit veins and penetrate the surrounding tissue, while erythrocytes typically do not leave the vascular system.
5. The lifespan of the majority of leucocytes is relatively short.
Erythrocytes: Life Span, Formation of Red Blood Cells, Physiological Factors influencing RBC number, Hemoglobin (Hb), Recycling RBC, and Blood Groups
Physiological Factors influencing RBC number
• The RBC count is higher in children than in adults, and it is quite high during birth (8–10 million mm).
• During excitement, the RBC count rises at high elevations and in warm weather.
• During pregnancy, women’s red blood cell counts are often low. Low altitude is associated with a decrease in RBC count.
CPR: Meaning, Importance, Sudden Cardiac Arrest, Survival, Recognition, Chest compressions, Complications, Training, and Compression Rates
The term “Cardiopulmonary resuscitation” (CPR) describes a set of life-saving emergency procedures used to physically revive a person experiencing cardiac arrest.
Blood: Definition, Functions, and Components
Blood is a fluid connective tissue. It moves continuously throughout the body, enabling continuous contact with tissues that are far apart. About 7% of a 72 kg man’s body weight is made up of blood (5.6 litres). Women have a lower proportion, but children have a higher proportion (which steadily declines until it reaches the adult level).
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Banana: Introduction, Geographical distribution, Morphology, Phytochemical constituents, Pharmacological activities and Traditional Uses
1. The banana plant, Musa paradisiaca, is a big herb with a succulent, very juicy stem that is a cylinder of leaf-petiole sheaths. It is often mistakenly called a “tree” and can grow up to 20 to 25 feet (6 to 7.5 meters) tall, emerging from a thick rhizome or corm.
2. The leaves are smooth, soft, elliptic or oblong, and they are numbered 4 or 5 to 15. They are spirally arranged, and they unfold once a week as the plant grows.
3. The inflorescence, a terminal spike that emerges from the heart at the tip of the stem, is an altered growth point. Initially, it appears as a big, tapering, long-oval bud covered in purple. The slender, nectar-rich, serrated, white blooms are arranged in whorled double rows along the flowering stalk as it opens, with a thick, waxy bract that resembles a hood and is deep red inside.
Milk: Meaning, Physical and Physico-Chemical Properties, Constituents, Production, and Trade
Milk is the secreted fluid of the mammary glands of female mammals. It has almost all of the nutrients needed to keep life going. Goat, sheep, and cow milk have been utilized as food by humans since the beginning of time. The word “milk” is now used interchangeably with cow’s milk. When provided commercially, the milk of other animals is identified, such as goat or sheep milk. Mammals’ mammary glands generate the white liquid meal known as milk. For young mammals, including breastfed human newborns, it serves as their main source of nutrition until they can process solid food. In addition to lactose and saturated fat, milk also includes calcium and protein. Milk immunity is a result of immunological factors and immune-modulating substances in milk.