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Diana Campodonico
Week 14 Assignment
| Question | Answer |
|---|---|
| Compared with the outside of the neuron, the inside has a(n) ____ charge. | negative |
| Which of the following is not one of the main chemical classes of neurotransmitters? | Triglycerides |
| Excitatory neurotransmitters are most likely to: | initiate an action potential. |
| A slight shift away from the resting membrane potentials in a specific region of the plasma membrane is called a _____ potential. | local |
| Severe depression can be caused by a deficit in certain brain synapses of: | amines. |
| Parasympathetic stimulation has no effect on any of the following areas except: | sweat glands. |
| Biofeedback involves willful control of specific effectors normally controlled only autonomically. | True |
| The part of the brain that assists in the maintenance of balance is the: | cerebellum. |
| The part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the: | hypothalamus. |
| Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate. | vagus |
| Which of the following is not a function of the hypothalamus? | Regulation of motor activity |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary. |
| All of the following are nonsteroid hormones except: | cortisol. |
| The major hormone produced by the corpus luteum is: | progesterone. |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes. |
| The two-point discrimination test can be used to measure: | the sensitivity of the skin in various parts of the body. |
| The somatic senses enable us to detect sensations, including: | Touch, Temperature, Pain - All of the above |
| One of the few hormones that functions on a positive-feedback loop is: | oxytocin. |
| Visceroceptors are located in which of the following? | Internal organs |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph. |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| The localized pressure gradient needed to maintain blood flow in a tissue is called | perfusion pressure. |
| Which are the two baroreceptors that are located near the heart? | aortic baroreceptors and carotid baroreceptors |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics. |
| Which of the following vessels do not have the ability to constrict and dilate? | capillaries |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| Because T cells attack pathogens more directly, T-cell immune mechanisms are classified as _____ immunity. | cell-mediated |
| Which protein interferes with the ability of viruses to cause disease? | interferon |
| Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? | Spleen |
| _______ is the only antibody class with the ability to cross the placental barrier, providing passive immunity to the developing fetus during pregnancy. | IgG. |
| _____ refers to a phenomenon in which the genetic characteristics common to a particular kind of organism provide defense against certain pathogens. | Species resistance |
| Memory cells: | become plasma cells when exposed to an antigen. |
| External respiration can be defined as: | the exchange of gases between the lung and the blood capillaries in the lung. & pulmonary ventilation. - Both A & B |
| The term used to describe the volume of air exchanged during normal inspiration and expiration is: | tidal volume. |
| The tendency of the thorax and lungs to return to the preinspiration volume is called: | elastic recoil. |
| Boyle’s law states that the volume of a gas varies _____ with pressure at a _____ temperature. | inversely; constant |
| The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. | 160 |
| During inspiration, the expansion of the lungs causes: | a decrease in alveolar pressure. |
| Internal respiration can be defined as: | the exchange of gases between the blood capillaries and the tissue cells. |
| About 98.5% of the oxygen carried by systemic arterial blood is attached to: | hemoglobin. |
| Gas exchange, the lungs’ main and vital function, takes place in the: | alveoli. |
| One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? | 20% |
| The major site for the absorption of the end products of digestion is the: | small intestine. |
| Glucose moves from the GI tract into the circulatory system by the process of: | cotransport. |
| The hormone that stimulates the release of bicarbonate substance from the pancreas is: | secretin. |
| The substances absorbed into the lymph capillaries are: | glycerol and fatty acids. |
| An end product of fat digestion is: | glycerol. |
| The enzyme pepsin begins the digestion of: | protein. |
| Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? | Cephalic phase |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |
| Hydrolysis refers to: | using water to split larger compounds into smaller ones. |
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Diana Campodonico