The infinitive is the most basic form of a verb. In Spanish, infinitives always end in -ar, -er or -ir, with -ar being the most common. An infinitive by itself does not indicate tense nor who or what is performing the action of the verb. In both English and Spanish, the infinitive can often function as a noun. In Spanish, such a noun is always masculine and is usually used in the singular form. The Spanish word for infinitive is infinitivo. Other examples of infinitives in Spanish are hablar, viajar, comprender, and resistir.
1 The kidneys are a pair of bean-shaped organs that lie on either side of the spine in the lower middle of the back. 2  Each kidney weighs about 5 ounces and contains approximately one million filtering units called nephrons.  Each nephron is made of a glomerulus and a tubule.
Your Kidney Location and Anatomy. You have two kidneys and the kidney location is on either side of the spine at the edge of your ribs. Each kidney is contained within a strong fibrous covering called the renal capsule.The Renal Capsule. The renal capsule is tough and protects the kidney, but it does not allow it to expand.our back will be very tender at the kidney location. When your kidney is swollen and the renal capsule becomes tight and painful, you will have mid to lower back pain, and your back will be very tender over your kidney.