Anatomy crossword (mediocre/hard)

1234567891011121314151617181920
Across
  1. 2. I’m the hidden layer beneath your skin, where fat cells reside and insulation begins. Connecting muscles, bones, and dermis too, who am I?
  2. 4. I'm a small bone located in the human skull, shaped like a butterfly, and I help form the eye sockets. What am I?
  3. 9. I'm a small bone located in the middle ear, shaped like a stirrup, and transmits vibrations to the inner ear. What am I?
  4. 10. I'm a conductor of sound, transmitting vibrations with ease. Without me, hearing would freeze. What am I?
  5. 12. I'm a regulator of temperature, keeping the body's thermostat in check. Without me, you'd be a wreck. What am I?
  6. 15. I'm a conductor of taste, found on the tongue's tip. Without me, flavors would flip. What am I?
  7. 16. I'm a gatekeeper of the stomach, controlling food's journey with care. Without me, acid would flare. What am I?
  8. 18. I'm a fluid in a sac, cushioning joints with care. Without me, movement would wear. What am I?
  9. 19. I’m the powerhouse of your posterior, the mighty engine behind your seated prowess. When you rise from a chair or climb a hill, it’s my strength you harness still. What am I?
  10. 20. I'm a tunnel of light, focusing rays with precision. Without me, you'd lose vision. What am I?
Down
  1. 1. I'm a chamber of secrets, storing memories deep inside. Without me, knowledge would hide. What am I?
  2. 3. I’m the hub of sensations, a relay station for messages galore. Alertness, memory, and emotion are my core. What am I?
  3. 5. I'm a master regulator, controlling the body's clock. Without me, chaos would knock. What am I?
  4. 6. I'm a conductor of thoughts, bridging hemispheres with ease. Without me, cognition would cease. What am I?
  5. 7. I'm a marvel of engineering, bending and flexing with grace. Without me, movement would be a race. What am I?
  6. 8. I'm a protector of the lungs, expanding and contracting with breath. Without me, life would face death. What am I?
  7. 11. This group of muscles in your lower limbs derive their name from the butcher’s act of tying the thighs of pigs with strings for sale or display. Identify the group of muscles.
  8. 13. I'm a coordinator of balance, located in the ear. Without me, you'd stumble and veer. What am I?
  9. 14. This bone was often the one sacrificed from large animals owing to its reputation as “sacred”. Identified as the posterior pelvic wall. Name the bone.
  10. 17. I'm a shield of the nervous system, insulating with my sheath. Without me, signals would be beneath. What am I?