Across
- 1. Tissue where oxygen diffusion can be compromised
- 5. Condition where inadequate oxygen reaches body tissues
- 9. Circumpolar Indigenous population with high metabolic rate
- 10. Hormone increasing metabolic rate and heart rate during cold stress
- 13. Widening of blood vessels to increase heat transfer
- 14. Insufficient oxygen delivery caused by reduced air pressure
- 15. Group known for the Hunter’s Response in cold environments
- 16. Alternating cycles of vasodilation and vasoconstriction in response to cold
- 17. Gene family linked to cancer risk with possible fertility effects
- 20. Lung structure that fills with fluid in high-altitude pulmonary edema
- 22. Long-term or reversible physiological adjustment to environmental stress
- 23. Body part showing the “hunting response” to cold
- 26. A single gene producing multiple phenotypic effects
Down
- 2. Altitude illness causing headache and nausea
- 3. Transcription factor activated during low-oxygen conditions
- 4. Production of red blood cells stimulated at high altitude
- 6. Heat-loss mechanism involving increased skin blood flow
- 7. Mechanism where arteries warm adjacent veins to conserve heat
- 8. Siberian Indigenous population with elevated basal metabolic rate
- 11. Environmental condition involving low temperatures
- 12. Type of natural selection balancing benefits and costs of a trait
- 18. Environmental factor lowering oxygen availability
- 19. Andean Indigenous population known for enhanced cold-induced vasodilation
- 21. Organ that produces erythropoietin
- 24. Protective chromosome ends associated with aging and fertility
- 25. Metabolic pathway accelerated during hypoxia