LO 3.1. What is the role of the pulmonary valve? To ensure blood flows in the correct direction between the left atrium and the pulmonary vein. To ensure blood flows in the correct direction between the right ventricle and the aorta. To ensure blood flows in the correct direction between the right ventricle and the pulmonary artery. To ensure blood flows in the correct direction between the right atrium and the pulmonary artery. To ensure blood flows in the correct direction between the left ventricle and the pulmonary artery.
Cooking foods to their proper temperature helps to ensure that __ bacteria are killed before the food is eaten. Some of the Most of the All of the Toxin-forming
Which organ system functions in the regulation of fluid levels? integumentary circulatory nervous digestive
Fill in the Blank Question On a cladogram, each square includes a common ancestor and all of its descendant species.
What would happen to the base pairing of DNA if we removed the van der Waals dispersion forces? Click on the VIEW IMAGE button to get a hint. a) The ladder of DNA would hydrolyze b) There would be no significant change c) The bases would lose their structure d) The double helix would unwind
The ureter exits the kidney at the hilum. True False
Having no nucleus, a biconcave shape, and the function of gas transport would describe a __ a. red blood cell b. platelet c. white blood cell d. albumin
A decrease in total peripheral resistance would cause blood flow to __ a. increase b. decrease c. remain unchanged
Chyle is found in the stomach. lacteals. pancreas. portal vein.
What is the role of oxygen in the body? Oxygen helps the body in building strong muscles. To produce energy in the body's cells. Oxygen maintains the pH balance of the body. Oxygen is responsible for the body's temperature regulation. Oxygen helps in the digestion process.
Which of the following types of cells is most responsible for responding to color? Rods Ganglion cells Bipolar cells Cones Optic nerve
Select the correct statement regarding chemical synapses. Neurotransmitter receptors are located on the axons terminals of cells. The synaptic cleft uses the action potential to transmit a chemical signal to the postsynaptic cell. Cells with gap junctions use chemical synapses. The release of neurotransmitter molecules gives cells the property of being electrically coupled.
The __ is a capillary network that produces a blood filtrate that enters the urinary tubules. glomerulus vasa recta interlobar capillary peritubular capillary
Movement of sodium ions into the muscle cell at the neuromuscular junction causes __ A. Repolarization of the muscle cell membrane B. Depolarization of the muscle cell membrane C. Re-uptake of acetylcholine D. Release of acetylcholine
The neurotransmitters dopamine and serotonin are associated with which emotion? fear joy anger
The movement of molecules and ions from the peritubular capillaries into interstitial fluid and then into the nephron tubule iscalled __ a. secretion b. reabsorption c. excretion d. filtration
B lymphocytes are directly responsible for cell-mediated immunity. Select one: True False
In the sequence of events for inspiration, what step happens immediately after contraction of the inspiratory muscles? Air flows into the lungs Intrapulmonary volume increases Thoracic cavity volume increases Intrapulmonary pressure decreases IDONT KNOWYET
Multiple Choice Question Select the statements that best describes the relationship between genes and chromosomes. Genes are variations of chromosomes and can change the structure of the protein product. Genes are composed of long strands of DNA organized into chromosomes. Chromosomes are composed of long strands of DNA organized into chunks called genes. Chromosomes break down to form genes during meiosis so that the genes can be easily separated during gamete formation.
Which cells secrete parathyroid hormone in the parathyroid gland? Hematopoietic cells Chief cells Parietal cells Follicular cells
