Anatomy

Definition of gills

Gills are organs of the respiratory system that various aquatic animals have. The Greek word bránchia derived from the Latin branchĭa, which came to Spanish in the form of the term mentioned. The gills, which can be external or internal, are composed of filaments whose origin is tegumentary. These organs allow the animal to obtain oxygen […]

Definition of bradycardia

Bradycardia is a heart rhythm that is slower than the normal one. In a case of bradycardia, the sinoatrial node emits less than sixty beats per minute. It should be noted that the structure where the electrical impulse that causes the heartbeat is born is called the sinoatrial node. If the node is not normal, the sinus node is called the sinus node.

Definition of food bolus

The food bolus is the element that is formed from the grinding of food by the action of the teeth and saliva. The food bolus, therefore, is the result of chewing and salivation. When the substances present in the food are degraded and the food bolus is formed, the food bolus is formed […]

Definition of mouth

Mouth is the term used to name the front opening of the digestive tract of animals, including humans. The mouth is located on the head and allows the intake of food and liquids. The concept – derived from the Latin word bucca – can refer to the cavity where the intestines are located.

Definition of bifid

Bifid is an adjective used to describe something that has a bifurcation or, in the field of biology, something that is split into two sectors or portions. The etymological root of the term is found in the Latin word bifĭdus. Spina bifida is known as a malformation of the spine […]

Definition of biceps

The term biceps refers, in its most general sense, to something that has two ends or two heads. The concept is often used in the field of anatomy to name a pair of muscles that, at its upper end, has two insertions or sectors. The biceps brachii muscle is located in the arm, covering the […]

Definition of bicephalous

Bicephalous is an adjective used to describe someone who has two heads. Beyond the physical sense (the duplication of the upper part of the body), the concept can also be used symbolically (something that has two heads). For example: “A two-headed calf was born in an Indian village: the locals […]

Definition of spleen

The spleen is a coppery colour with a tendency to yellowish, according to the Royal Spanish Academy (RAE). The term in our language comes from the Latin word badius, which can be translated as “reddish”. The most common use of the notion, however, is in the field of anatomy. The spleen is a […]

Definition of beard

The beard is the area of ​​the face below the mouth, according to the first definition mentioned by the Royal Spanish Academy (RAE) in its dictionary. The most common use of the concept, however, refers to the hair that grows on that part of the face. It is called a beard, therefore, […]

Definition of axon

Before going into the meaning of the term axon, we must first know its etymological origin. In this case, it can be said that it comes from Greek, exactly from the word axon, which can be translated as “axis”. The concept of axon is used in the field of biology to refer to a […]