Which of the following structures prevents the entry of food into the trachea during swallowing?
A. Glottis
B. Uvula
C. Epiglottis
D. Tongue
Answer: Option C
Solution (By JKSSB Mock Tests)
The epiglottis is a cartilaginous flap that covers the glottis (the opening into the larynx and trachea) during swallowing, directing food and liquid into the esophagus. The tongue moves food, the glottis is the opening itself, and the uvula is a soft tissue hanging at the back of the palate that assists in speech and prevents nasal regurgitation.
Explanation:
Root pressure is the positive hydrostatic pressure developing in the xylem of roots due to active transport of ions into the vascular cylinder, drawing water osmotically. It can cause guttation in some plants. Transpiration pull is the main driving force for water ascent. Turgor pressure is the pressure of cell contents against the cell wall.
Explanation:
The Murrah is a premier breed of water buffalo (Bubalus bubalis) originating from the Haryana and Punjab regions of India. It is renowned for its high milk yield, high fat content in milk, and adaptability to local conditions. It is one of the most important dairy breeds in India and has been exported worldwide for dairy improvement. Sahiwal and Holstein are cattle breeds.
Explanation:
Vitamin K is required for the gamma-carboxylation of prothrombin (factor II) and other clotting factors, enabling them to bind calcium and participate in coagulation. Deficiency leads to bleeding.
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