JK StudyPulse

FERTILISATION
• Fertilisation is the → Fusion of s***m and o**m
• Result of fertilisation → Zygote
• Fertilisation usually occurs in → Fallopian tube (ampulla)
• Male gamete → S***m
• Female gamete → O**m
• Human chromosome number in s***m → 23
• Human chromosome number in o**m → 23
• Chromosome number after fertilisation → 46
• Cell division after fertilisation → Cleavage
• Implantation occurs in → Uterus
• Early embryo stage → Blastocyst
• Fertilisation starts → Pregnancy

BONE
• Bone is a → Connective tissue
• Total bones in adult human → 206
• Total bones in newborn → About 270
• Longest bone in body → Femur
• Smallest bone in body → Stapes
• Strongest bone in body → Femur
• Largest facial bone → Mandible
• Collar bone is called → Clavicle
• Kneecap is called → Patella
• Bone-forming cells → Osteoblasts
• Bone-resorbing cells → Osteoclasts
• Bone marrow helps in → Blood cell formation
• Bone weakness disease → Osteoporosis

S***M
• S***m is the → Male reproductive cell (gamete)
• S***m is produced in → Te**es
• Site of s***m formation → Seminiferous tubules
• S***m maturation occurs in → Epididymis
• S***m carries → 23 chromosomes
• S***m helps in → Fertilization
• Head of s***m contains → Nucleus
• Cap of s***m head → Acrosome
• S***m tail helps in → Movement
• Energy source for s***m → Mitochondria (middle piece)
• Male s*x hormone involved → Testosterone
• Normal semen contains → Millions of s***m
• Fusion of s***m and o**m forms → Zygote