After traveling through the proximal convoluted tubule, glomerular filtrate enters which of the following nephron components?

A. Bowman's capsule:
Bowman's capsule is the initial part of the nephron where blood is filtered to form glomerular filtrate. The filtrate is collected here after being filtered through the glomerulus. However, after traveling through the proximal convoluted tubule, the filtrate does not return to Bowman's capsule.

B. Collecting duct:
The collecting duct is the final part of the nephron where urine is collected after it has passed through the nephron’s other components. The glomerular filtrate enters the collecting duct after passing through the Loop of Henle and the distal convoluted tubule, not directly from the proximal convoluted tubule.

C. Glomerulus:
The glomerulus is a network of capillaries located within Bowman's capsule where blood filtration begins. After filtration occurs, the filtrate moves into the proximal convoluted tubule. The filtrate does not return to the glomerulus after it has passed through the proximal convoluted tubule.

D. Loop of Henle:
After the glomerular filtrate passes through the proximal convoluted tubule, it enters the Loop of Henle. This segment of the nephron is crucial for concentrating urine by reabsorbing water and salts from the filtrate, thereby playing an essential role in the body's fluid and electrolyte balance.

A. Epiglottis: The epiglottis is a leaf-shaped flap of cartilage located at the base of the tongue. During swallowing, it moves downward to cover the opening of the trachea (the glottis. , preventing food and liquid from entering the airway and directing them into the esophagus.

B. Uvula: The uvula is a small, fleshy extension at the back of the soft palate. Its role is to help prevent food from entering the nasal cavity during swallowing and to aid in speech, but it does not close the trachea.

C. Vestibular fold: The vestibular folds, or false vocal cords, are located in the larynx and contribute to the protection of the vocal cords and to phonation. They do not function to close the trachea during swallowing.

D. Cricoid cartilage: The cricoid cartilage is a ring-shaped cartilage located below the thyroid cartilage in the larynx.