Human Physiology
In the lungs, oxygen diffuses into the blood because the partial pressure of oxygen is higher in the alveoli than in this thing.
Most nutrient absorption in humans takes place in this section of the digestive tract, which contains villi and microvilli to increase surface area.
Small intestine
Calcium ions stored in this organelle are released during muscle contraction.
Sarcoplasmic Reticulum
Thin part of ascending loop of henle
Jason, a 19-year-old college student, is walking to class one day and slips on some notoriously slippery Bostonian ice, breaking his hip. Upon questioning by his doctor, he admits to feeling “slowed down” lately and experiencing frequent nausea, thirst, headaches, and muscle pain. Which organ is most likely malfunctioning?
Parathyroid