During sarcomere contraction, the myosin thick filaments themselves shorten.

Short Answer #2  Aim for 100–150 words.A patient with celiac disease has an autoimmune reaction that damages the lining of their small intestine, leading to poor absorption of nutrients. Identify and describe the structures responsible for nutrient absorption in the small intestine, specifically the villi and microvilli, and briefly describe their normal anatomical role in absorption. Then briefly explain how damage to these structures leads to the malabsorption seen in celiac disease. Tip: Same approach as the other short answer: describe what’s normally there first, then explain what changes when it’s damaged. How this will be graded (10 points): Identify and describes the structures: 5 pts Connect structure to function: briefly explains how the normal arrangement is responsible for nutrient absorption 3 pts Explains the problem:  2 pts

Which layer of the GI tract wall is responsible for peristaltic contractions that propel food?

A patient with a localized infection in the hand develops swollen, tender lumps in the armpit. This swelling reflects the primary function of the lymph nodes located there, which is to:

During a sit-up, a person shortens the muscle running vertically along the front of the abdomen to lift the torso off the ground. Which muscle is the prime mover for this trunk flexion?

The functional unit of the kidney responsible for filtering blood and forming urine is the:

Chemotherapy causes hair loss by targeting rapidly dividing cells.  Which structure contains the rapidly dividing cells that are targeted, leading to hair loss?

Match each cartilage type to its defining characteristic.

A child accidentally aspirates a small object while eating. Based on the structural differences of the bronchi, which primary bronchus is the object most likely to lodge in?

The digestive organ primarily responsible for water absorption is the: