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Aprili Womack-Sander
Study stack week 1-7
| Question | Answer |
|---|---|
| If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions? | Oxytocin would inhibit uterine contractions. |
| Homeostasis can best be described as: | a state of relative constancy |
| DNA: | is a double-helix strand of nucleotide |
| The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as | organs that are directly influenced by physiological variables or mechanism |
| Epidemiology is the study of the _____ of diseases in human populations. occurrence | occurrence, distribution, transmission |
| What determines how a protein performs? | shape |
| A saturated fatty acid is one in which | all available bonds of its hydrocarbon chain are filled. |
| Which of the following is not a characteristic of skeletal muscles? | Having one nucleus per cell |
| Which of the following is not a characteristic of smooth muscles? | Having intercalated disks |
| Which cells electrically insulate axons to increase the speed of conduction? | Schwann cells, Oligodendrocytes |
| Which of the following vitamins is(are) absorbed through the skin? | Vitamin A , Vitamin D , Vitamin K |
| Which cells help destroy pathogens and damaged tissue in the brain? | Microglia |
| Which of the following is not a characteristic of connective tissue? | Typically holds its cells together tightly by means of desmosomes |
| Synarthrotic joints are | immovable |
| Which of the following is not a part of the neuromuscular junction | T-tubules |
| The strength of a muscle contraction is influenced by the: | amount of load, initial length of muscle fibers, recruitment of motor units. |
| White fibers are also called _____ fibers. | fast |
| A gliding joint is an example of a(n) _____ joint. | multiaxial |
| If the threshold potential is surpassed, the full peak of the action potential is always reached. | True |
| Which of the following statements about amino acid neurotransmitters is incorrect? | -They are among the most common neurotransmitters in the central nervous system (CNS). - They are all inhibitory neurotransmitters. - Glycine is a widely distributed inhibitory neurotransmitter in the spinal cord. |