A&P 1 FINAL EXAM, STRAIGHTERLINE ANATOMY & PHYSIOLOGY 1, STRAIGHTERLINE A&P CUMULATIVE FINAL

A&P 1 Final Exam, Straighterline Anat omy and Physiology 1, Straighterline A&P 1 Cumulative Final What is the smallest leve l of organization in the body that contains the body's genetic information? Select one: a. chemical b. cellular c. tissue d. organism ✔Ans✔ B. Cellular The cellular level includes the nucleus, an organelle that contains the body's genetic information. Which is an example of a normally occurring positive -feedback mechanism? Select one: a. elevated blood pressure during exercise b. increase in heart rate after blood loss c. decrease in blood pressure after blood loss d. stretching of the uterus near the end of pregnancy ✔Ans✔ d. stretching of the uterus near the end of pregnancy Which of the following processes generates the most ATP within a human cell? Select one: a. glycolysis b. lactic acid fermentation c. oxida tive phosphorylation d. citric acid cycle ✔Ans✔ c. oxidative phosphorylation During DNA replication, how does each template strand eventually become two identical DNA molecules? Select one: a. The two strands form continuously, catalyzed by DNA polymeras e. b. The two strands form continuously, catalyzed by DNA ligase. c. One strand forms continuously, the other forms in short segments spliced by DNA polymerase. d. One strand forms continuously, the other forms in short segments spliced by DNA ligase. ✔Ans✔ d. One strand forms continuously, the other forms in short segments spliced by DNA ligase. Which is the most superficial layer of skin that is composed primarily of living cells? Select one: a. stratum corneum b. stratum lucidum c. stratum basale d. stratum spinosum ✔Ans✔ d. stratum spinosum Which of the following is the definition of a third degree burn? Select one: a. a burn that covers at least 25% of the skin b. a burn that has destroyed the dermis and epidermis c. a burn that can only be caused by fire d. a burn that does not leave scars ✔Ans✔ b. a burn that has destroyed the dermis and epidermis Which of the following types of openings in the skeletal system does a "sinus" describe? Select one: a. cavity b. cleft c. hole d. tunnel ✔Ans✔ a. cavity Which of the following components of the bone matrix, when removed, allows the bone to be easily shattered? Select one: a. cartilage b. collagen c. hydroxyapatite d. mineral ✔Ans✔ b. collagen Which of the followin g is the most widely distributed type of muscle in the body? Select one: a. cardiac b. postural c. skeletal d. smooth ✔Ans✔ d. smooth Which sentence best describes the sliding filament model of muscle contraction? Select one: a. Actin and myosin filament s remain stationary. b. Actin and myosin myofilaments shorten. c. Sarcomeres and myofibrils contract. d. Sarcomeres and myofibrils lengthen. ✔Ans✔ c. Sarcomeres and myofibrils contract. doctor performing an autopsy on a patient concludes that part of the brain was likely damaged by trauma due to a large population of which type of cell? Select one: a. Schwann cells b. microglia c. oligodendrocytes d. ependymal cel ✔Ans✔ b. microglia What type of axons is found in a gray ramus comunicans? Select one: a. myelinated, pre -ganglionic axons b. myelinated, post -ganglionic axons c. unmyelinated, pre -ganglionic axons d. unmyelinated, post -ganglionic axons ✔Ans✔ d. unmyelinated, post -ganglionic axons Which class of chemical messengers is secreted by neurons into synaptic clefts to activate an adjacent cell? Select one: a. autocrine b. endocrine c. neurotransmitter d. paracrine ✔Ans✔ c. neurotransmitter The targeted response of the hormone lip otropin is an increase in which of the following? Select one: a. the breakdown of fat in adipose tissues b. the breakdown of lipids and release of fatty acids from cells c. the production of milk in lactating women