click below
click below
Normal Size Small Size show me how
Tracy Vu
PHYSIOLOGY WEEK 1-6
| Question | Answer |
|---|---|
| functions of the skin | Protection Sensation Thermoregulation Vitamin D synthesis Excretion |
| Skin Cells | Keratinocytes: Produce keratin, a protective protein. Melanocytes: Produce melanin, which gives skin its color. Langerhans Cells: Part of the immune system. Merkel Cells: Sensory receptors for touch. |
| The two processes of protein synthesis are: | transcription and translation |
| Glycolysis occurs in what part of the cell? | cytoplasm |
| Functions of the Musculoskeletal System | Functions of the Musculoskeletal System |
| What happens when muscles contract? | Actin and myosin filaments slide past each other ATP provides energy for contraction |
| Negative Feedback Loop | A mechanism that reverses a change in a controlled condition to maintain homeostasis. Example: Body temperature regulation. Increase in Temperature: Triggers sweating to cool down. Decrease in Temperature: Triggers shivering to warm up. |
| Positive Feedback Loop | A mechanism that amplifies a change in a controlled condition. Example: Childbirth. Contractions: Triggered by the release of oxytocin, causing more oxytocin to be released, which increases contractions until the baby is born. |
| DNA Structure | Double Helix: Two strands twisted together. Nucleotides: Made of a phosphate group, a sugar (deoxyribose), and a nitrogenous base. Bases: Adenine (A), Thymine (T), Cytosine (C), Guanine (G). Base Pairing: A-T and C-G. |
| Functions of DNA | enetic Blueprint: Holds the instructions for building and maintaining an organism. Protein Synthesis: DNA sequences are transcribed into mRNA and translated into proteins. |