In the central auditory pathways, second-order neurons are located in which of the following?
Answer(s): B
Second-order neurons in the central auditory pathways are located in the dorsal and ventral cochlear nuclei. They receive afferents from the first-order neurons located in the cochlear (spiral) ganglion (choice A). Secondorder fibers from the cochlear nuclei project in turn to the inferior colliculi (choice C), nuclei of lateral lemniscus (choice D), and superior olivary nuclei (choice E).
Arrow 2 in following figure points to which of the following structures?
Answer(s): D
The macula densa indicated by arrow 2 is a modified segment of the distal tubule at the site of its passage adjacent to the vascular pole of the renal corpuscle. The name arises from the close spacing of nuclei of the epithelial cells forming this part of the distal tubule. These cells are thought tosense the chloride content in the passing filtrate and generate signals that regulate the caliber of the afferent arteriole. The glomerulus (choice A, arrow 1) is a network of capillaries derived from the afferent arteriole and suspended within Bowman's capsule by its vascular pole. The juxtaglomerular cells (choice B) form a cuff around the afferent arteriole prior to its entrance into the glomerulus and they secrete renin. Lacis cells (choice C, arrow 4) are extraglomerular mesangial cells with an uncertain function. The vascular pole (choice E, arrow3) feeds blood to the glomerulus and carries blood away from it. As part of the juxtaglomerular apparatus, it is closely apposed to the macula densa.
A gang member is rushed to the emergency room suffering from multiple stab wounds made by an ice pick. Athird-year medical student rotating through emergency medicine is puzzled by the sight of a milky white substance exuding from a stab wound just superior to the right sternoclavicular joint. Which of the following structures is possibly injured at this location?
The right lymphatic trunk is ruptured and chyle is exuding from the wound. Blood would flow from a wound involving the common carotid artery (choice A) or internal jugular vein (choice C). Astabbing lesion of the cupola of the right lung (choice B) would result in pneumothorax. The thoracic duct (choice E) does carry chyle. However, the thoracic duct drains into the bifurcation of the internal jugular and subclavian veins on the left side, above the left sternoclavicular joint.
A 72-year-old male patient has suffered a cerebral infarct affecting the left cerebral hemisphere. On examination of the patient, it is noticed that his verbal output is fluent and paraphasic. His comprehension of speech is normal but repetition is severely impaired. Naming is also impaired, although when given a list, the patient is able to select the correct name. Special consultation with a neurologist results in a diagnosis of conduction aphasia. Which of the following brain structures is affected?
Answer(s): A
The arcuate fasciculus connects Wernicke's area to Broca's area, integrating comprehension of speech with motor speech. A lesion in this connecting bundle results in this unusual condition of conduction aphasia, characterized by impairment of repetition and naming. Broca's area (choice B) is the motor speech area and lesion in this area will result in motor speech impairment. However, this patient's verbal output is fluent. Alesion in the nucleus ambiguus (choice C) will result in dysarthria and also loss of a fluent verbal output. The red nucleus (choice D) is a mesencephalic motor nucleus, which does not participate in the central pathways for speech. Wernicke's area (choice E) is the speech comprehension area, which is intact in this patient because he comprehends spoken language.
Which of the following is characterized by an absence of lymphoid follicles and germinal centers?
Answer(s): E
The thymus provides for development of new T lymphocytes in an environment shielded from foreign antigens. Like bone marrow, the thymus is a primary lymphoid organ, and not a site of reactions to foreign antigens. Lymphoid follicles are sites of B lymphocyte proliferation in response to antigen stimulation.These occur in the lymph nodes (choice A), Peyer's patches (choice B), tonsils (choice C), and white pulp of the spleen (choice D).
Share your comments for USMLE STEP1 exam with other users:
please i need the mo-100 questions
very good use full
very valid questions
will these question help me to clear pl-300 exam?
please provide me with these dumps questions. thanks
in the pdf downloaded is write google cloud database engineer i think that it isnt the correct exam
i think you have the answers wrong regarding question: "what are three core principles of web content accessibility guidelines (wcag)? answer: robust, operable, understandable
these questions are not valid , they dont come for the exam now
question looks valid
good for practice
need more q&a to go ahead
question 59 - a newly-created role is not assigned to any user, nor granted to any other role. answer is b https://docs.snowflake.com/en/user-guide/security-access-control-overview
just passed my exam today. i saw all of these questions in my text today. so i can confirm this is a valid dump.
needed dumps
very helpful
will post once the exam is finished
relevant questions
just clear exam on 10/06/2202 dumps is valid all questions are came same in dumps only 2 new questions total 46 questions 1 case study with 5 question no lab/simulation in my exam please check the answers best of luck
q.112 - correct answer is c - the event registry is a module that provides event definitions. answer a - not correct as it is the definition of event log
good and useful.
good questions
good content
totally not correct answers. 21. you have one gcp account running in your default region and zone and another account running in a non-default region and zone. you want to start a new compute engine instance in these two google cloud platform accounts using the command line interface. what should you do? correct: create two configurations using gcloud config configurations create [name]. run gcloud config configurations activate [name] to switch between accounts when running the commands to start the compute engine instances.
kindly upload the dumps
still learning
excellent way to learn
help so much
understand sql col.
i would give 5 stars to this website as i studied for az-800 exam from here. it has all the relevant material available for preparation. i got 890/1000 on the test.
this is nice.
q55- the ridac workflow can be modified using flow designer, correct answer is d not a
by far this is the most accurate exam dumps i have ever purchased. all questions are in the exam. i saw almost 90% of the questions word by word.
i cleared the az-104 exam by scoring 930/1000 on the exam. it was all possible due to this platform as it provides premium quality service. thank you!
question # 232: accessibility, privacy, and innovation are not data quality dimensions.