What type of tissue is shown here?
Simple cuboidal epithelium
Stratified squamous epithelium
Transitional epithelium
Simple columnar epithelium
The Correct Answer is A
A. Simple cuboidal epithelium: The nephron tubules (such as the proximal and distal convoluted tubules, and parts of the collecting duct) are lined with simple cuboidal epithelial cells. These cells are specialized for secretion and reabsorption, which are essential functions in urine formation. Their cube-like shape allows for a balance between structural support and metabolic activity.
B. Stratified squamous epithelium: Found in areas subject to friction, such as the skin and esophagus, not in nephron tubules.
C. Transitional epithelium: Specialized for stretching, found in the urinary bladder and ureters, not in the nephron.
D. Simple columnar epithelium: Taller cells found in the gastrointestinal tract, not in kidney tubules.
Simple columnar epithelium: Taller cells found in the gastrointestinal tract, not in kidney tubules.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Glycolysis: This is the first stage of cellular respiration. As shown in the diagram, it occurs in the cytosol outside of the mitochondria and results in a small yield of ATP (indicated by the yellow starburst at the bottom).
B. Pyruvate Oxidation: This is the "transition" step represented by the smaller orange box where pyruvate enters the mitochondrial matrix to be converted into Acetyl-CoA.
C. Citric Acid Cycle (Krebs Cycle): This stage is represented by the red circular flow within the mitochondrial matrix, where electron carriers (NADH and $FADH_2$) are primarily generated.
D. Oxidative Phosphorylation: Indicated by the purple box on the right, this final stage occurs on the inner mitochondrial membrane (cristae) and produces the largest amount of ATP using the electron transport chain and chemiosmosis.
Correct Answer is B
Explanation
A. Cardiac Muscle Tissue: This tissue is found exclusively in the walls of the heart to facilitate involuntary rhythmic contractions. It is not found in the limbs.
B. Skeletal Muscle Tissue: This tissue is attached to bones and is responsible for voluntary movement. The arrow points to the quadriceps femoris group, which is composed of skeletal muscle fibers.
C. Fibrocartilage: While present in the knee (as the menisci), fibrocartilage is a tough, shock-absorbing tissue found between bones, not in the large, reddish contractile mass indicated by the arrow.
D. Dense Regular Connective Tissue: This tissue forms tendons and ligaments. While a tendon (the patellar tendon/ligament) is visible just below the arrow, the arrow specifically points to the belly of the muscle.
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