Human being
Living being representing the most evolved species on Earth, characterized especially by upright stance, spoken language and a large brain.
ANATOMY
Science that studies the structure of the human body, as well as the relationships between the various organs within it.
ANATOMY -> ANATOMÍA
El Diccionario Visual, a new valuable resource to learn Spanish. Includes 17 all-around themes to explore, including the human body, sciences and food.
El Diccionario Visual, a new valuable resource to learn Spanish. Includes 17 all-around themes to explore, including the human body, sciences and food.
muscles
Contractile organs made of fibers allowing the body to move and maintain its posture; the human body has over 600 muscles.
skeleton
All the articulated bones (about 200), of varying sizes and shapes, forming the frame of the body, supporting the muscles and protecting the vital organs.
![types of synovial joints [1]](/images/human-being/anatomy/skeleton/types-synovial-joints_1.png "types of synovial joints [1] image")
![types of synovial joints [2]](/images/human-being/anatomy/skeleton/types-synovial-joints_2.png "types of synovial joints [2] image")
teeth
Hard organs implanted in maxillae and used for masticating food; a child usually has 20 and an adult 32 (16 per jaw).
![cross section of a molar [1]](/images/human-being/anatomy/teeth/cross-section-molar_1.png "cross section of a molar [1] image")
![cross section of a molar [2]](/images/human-being/anatomy/teeth/cross-section-molar_2.png "cross section of a molar [2] image")
blood circulation
Propelled by the contractions of the heart, blood travels through the blood vessels of the body bringing oxygen and nutrients and removing waste.
respiratory system
It causes gaseous exchanges to take place in the lungs by ensuring that oxygen is carried to the blood through inspiration, and carbon dioxide is eliminated from the blood through expiration.
digestive system
Formed of the mouth, digestive tract and appended glands, it converts ingested food so that it can be assimilated by the organism.
urinary system
Eliminates the organism’s waste through secretion and evacuation of urine; it also regulates the quantity of water and salt in the body.
nervous system
It directs the movements of the organs and muscles and receives and interprets sensory messages coming from the body.
![central nervous system [1]](/images/human-being/anatomy/nervous-system/central-nervous-system_1.png "central nervous system [1] image")
![central nervous system [2]](/images/human-being/anatomy/nervous-system/central-nervous-system_2.png "central nervous system [2] image")
male reproductive organs
The male genitalia ensure reproduction; they produce spermatozoa and eject them into the female genital tract during copulation.
female reproductive organs
Mainly internal, they enable fertilization of the egg by the spermatozoon and the development of the embryo and fetus.
