Dr. VIKAS JANGIR

1. Total Bones – An adult human has 206 bones, while a newborn has 270 bones (some fuse later). 2. Bone Types – Four types: Long (femur), Short (carpals), Flat (skull), Irregular (vertebrae). 3. Axial & Appendicular Skeleton – Axial (80 bones) includes skull, vertebrae, ribs; Appendicular (126 bones) includes limbs and girdles. 4. Largest & Smallest Bone – Femur (thigh bone) is the longest; Stapes (middle ear) is the smallest. 5. Bone Composition – Made of collagen (organic) and calcium phosphate (inorganic) for strength. 6. Bone Cells – Osteoblasts (form bone), Osteoclasts (resorb bone), Osteocytes (maintain bone). 7. Bone Marrow – Red marrow produces blood cells; yellow marrow stores fat. 8. Joints – Fibrous (immovable), Cartilaginous (partially movable), Synovial (freely movable).

ZOOLOGY ⭐️⭐️⭐️⭐️⭐️

Question Paper Pattern : The question paper will consist of 180 compulsory questions. The provision for optional questions, introduced temporarily during the COVID-19 pandemic, will no longer be available. Examination Duration - The total duration of the examination will be 180 minutes (3 hours).

https://yt.openinapp.co/5jxz3 Here are five key points on the mammary glands for NEET UG preparation: - Mammary glands are modified sweat glands specialized for milk production in females. - Each gland is composed of multiple lobes, which are further divided into lobules containing milk-secreting alveoli. - Prolactin stimulates milk production, while oxytocin triggers the ejection of milk. - Milk is transported from alveoli through ducts to the nipple for feeding. - Hormonal regulation of the mammary glands occurs mainly during pregnancy and lactation.

https://yt.openinapp.co/Ear-anatomy- The human ear consists of three main parts: outer, middle, and inner ear. The outer ear includes the pinna and ear canal, directing sound waves to the eardrum. The middle ear houses three small bones (malleus, incus, and stapes) that amplify sound. The inner ear contains the cochlea, responsible for hearing, and the vestibular system, essential for balance.

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