Kidneys play biggest role in fluid balance. They are part of the excretory system.
the keratinocytes in the epidermal, when it exposed to UV light produce vitamin D
No. The hypothalamus controls things like body temperature, thirst and hunger, by working with the pituitary gland. It is part of the homeostasis system, not the learning system.
The blood is part of the cardiovascular system.
it is part of the digestive system and the respiratory system
Feudal
tax
A fief is a piece of land granted by a lord to a vassal in exchange for loyalty and military service. A manor is a large estate, typically including the lord's residence, agricultural land, and the homes of peasants who worked the land. In the feudal system, a fief could be part of a manor, but they are not interchangeable terms.
fief or feoff
(A fief, or land held in trust, was given to a lower vassal or serf in the feudal system. The word fee developed from the share, tribute, or rent paid to the lord, hence landlord)"The son inherited his father's fief, and had many serfs who farmed the land.""Under feudalism, a noble could not sell his fief to another."
Fief (Land) Fealty (Loyalty) Faith (Religious)
Fief-holding was a system in which vassals were granted land (fiefs) by lords in exchange for loyalty and military service. Manorialism, on the other hand, was an economic system centered around the manor, a large estate controlled by a lord. Fiefs were often part of manors, with vassals holding land from the lord within the manor and providing labor and resources in return.
managing the operation of the fief and pledging loyalty to the lord
It was important because that's how the lords got their money
A fief.
Sensory system
no it can not fore a fief is the way that a vassel makes money