Straighterline A&P 1 Cumulative Final| 343 questions| with complete solutions

Which is an example of a normally occurring positive-feedback mechanism? CORRECT ANSWERS: stretching of the uterus near the end of pregnancy Which of the following is the most widely distributed type of muscle in the body? CORRECT ANSWERS: Smooth A 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? CORRECT ANSWERS: microglia During DNA replication, how does each template strand eventually become two identical DNA molecules? CORRECT ANSWERS: 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? CORRECT ANSWERS: stratum spinosum Which of the following components of the bone matrix, when removed, allows the bone to be easily shattered? CORRECT ANSWERS: Collagen The targeted response of the hormone lipotropin is an increase in which of the following? CORRECT ANSWERS: the breakdown of fat in adipose tissues What is the smallest level of organization in the body that contains the body's genetic information? CORRECT ANSWERS: cellular Which sentence best describes the sliding filament model of muscle contraction? CORRECT ANSWERS: Sarcomeres and myofibrils contract Which of the following is the definition of a third degree burn? CORRECT ANSWERS: a burn that has destroyed the dermis and epidermis Which class of chemical messengers is secreted by neurons into synaptic clefts to activate an adjacent cell? CORRECT ANSWERS: Neurotransmitter Which of the following types of openings in the skeletal system does a "sinus" describe? CORRECT ANSWERS: Cavity Which of the following processes generates the most ATP within a human cell? CORRECT ANSWERS: Oxidative phosphorylation What type of axons is found in a gray ramus comunicans? CORRECT ANSWERS: unmyelinated, post-ganglionic axons