Biology 1010. Exam 1. Kearley 2024 study guide fully solved & verified for accuraCY.

the dermis You go outside on a hot day and sweat evaporates form your skin. In what layer of the integument was that sweat generated? stratum corneum When cells from the stratum basal die, where will they go next? Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:04 / 0:15 Full screen sweat and oil glands If you took a cross section through the structures in your dermis, which of those structures would have a hollow space located inside to allow for the flow of fluids? stratum corner of the epidermis A dust mite will feed on cells that have come directly from the: temperature of 98.6, blood pH List as many specific examples of homeostasis as you can think of. raised moles/ discoloration of skin (ABCs of moles) What changes in the physical appearance of the skin are warning signs that malignant (cancerous) cells could be present? smoking, UV radiation, stress, aging List 3 things that cause wrinkles in humans. hyaline cartilage If you got a nose ring, what type of cartilage would you be piercing? when they get cold and their hair stands up, it serves as a buffer layer of warmth because they have so much hair; humans don't have enough hair Why are arrector pill muscles really effecting for habits on a cold day, but not necessarily for humans? cartilaginous joint If you have back trouble, it is because you have damaged this type of joint. synovial joint - which stabilized by ligaments and call a ball and socket joint If you tear your ACL, what type of joint has been destabilized? it reduces the amount of shock absorbed during movement between bones Why does cartilage breakdown because pain in your joints? 25-40 years What age range is key for getting enough calcium to help prevent osteoporosis later? rheumatoid arthritis If bone is deposited into a joint, this would indicate what condition? because there is no blood flow to cartilage like there is to bone Why does cartilage damage often take longer to repair than bone damage? exercise Besides getting enough calcium, what else is absolutely necessary to strengthen bones and prevent osteoporosis? we have more facial muscles Why can humans communicate so much more information with our faces than most other animals? it would prevent the unblocking of the sites on the actin filament so the myosin filaments can reattach and continue moving, causing the sarcomere to contract If your muscles ran out of ATP, what specifically would that prevent in sarcomere contraction? it will stoop contracting and stretch out? You rest after running a spring, as the muscles in your leg RELAX, what will happen to the sarcomere? because that means the nerve impulse would not cause an action potential to release the calcium ions Why would it be harmful if your muscle cells always maintained a negative charge? contraction In tetany, the ____ has been so high that it has caused the muscle to luck up. contraction What stage (relaxation vs. contraction is your sarcomere in when the H zone has disappeared? relaxing When the Z band moves away from the center of the sarcomere, the sarcomere is: the number of actin and myosin filaments increases with increased exercise; also when picking ip something heavy, they will bind to the actin filament binding sites which causes the sarcomere to contract You pick up a heavy weight, what happens to the myosin heads in your bicep when you do that? the myofilaments will not side past each other If you don't have enough ATP for myosin heads to release form the actin filaments, what will your muscle do? the spring would be anaerobic exercise You sprint up the stairs in the classroom and then go for a five mile run around campus, what type(s) of respiration were you using for those activities? it would die during the action potential spending across the sarcolemma (muscle cell membrane) If transverse tubules were blocked, where would the nerve impulse die each time?