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The vertebral arteries take blood to what main body organ?

These arteries take blood to the kidneys:

Small vessels which supply blood to the outer layers of other vessels are called:

The femoral artery becomes the popliteal artery at which location?

How does the role of the umbilical arteries compare with that of the umbilical vein?

Which fetal structure connects the pulmonary artery to the aorta to bypass lung circulation?

The subcostal arteries would be supplying blood to the area:

The common carotid arteries terminate by bifurcating into the:

20-year-old Marcus has recently dropped out of college due to a sudden decline in his ability to function. Over the past three months, his roommates noticed him staying in his room for long periods, often whispering to himself or shouting at seemingly no one. He has told his sister that a man named “Rynor” visits him in the night to warn him about invisible enemies watching his every move. During conversations, Marcus jumps from topic to topic without logical connections, saying things like, “The moon is watching, but I can smell green. I must collect the bells for Rynor before the ceiling falls.” He has also invented unusual words like “carnimix” and “flebberating” in his speech. When asked about his day, he frequently responds with rhyming phrases such as, “Fine and shine, grapevine, align.” His face appears blank most of the time, and he rarely initiates or maintains conversation with others. He often starts projects, like painting or writing, but never finishes them. Marcus has also been observed making repetitive hand movements and refusing to eat, claiming the food has been “encoded with messages.” After beginning treatment with antipsychotic medication, most of Marcus’s symptoms resolved within four months. Which diagnosis best fits Marcus’s symptoms?

Javier, a 14-year-old middle school student, is known for his energetic personality and love for skateboarding and video games. Teachers report that Javier often talks out of turn in class and struggles to stay seated during lessons. He frequently interrupts his classmates, finishes their sentences, and blurts out answers before the teacher has finished asking a question.At home, Javier’s parents describe him as lively but easily distracted. He tends to start multiple chores but rarely finishes any without reminders. His mother notes that he often seems to be “driven by a motor,” constantly moving or tapping his hands and feet. He’s also had difficulty waiting his turn when playing games with his siblings and often becomes frustrated or impatient in lines or group settings.Though Javier has trouble staying focused on schoolwork, he performs well in hands-on activities that allow movement and creativity. His pediatrician noted that these behaviors have been present since early childhood and occur in multiple environments. What developmental pattern supports an ADHD diagnosis in this case?