Describe the Ptolemaic Model of the Universe

question 144

Essay

Describe the Ptolemaic model of the universe. Draw a diagram of the model showing the major components of the model for Earth, the Moon, the Sun, and the five planets visible to the Greeks.

---

Definitions:

Peptide Hormones

Short strings of amino acids that act as signaling molecules, regulating physiological processes in the body.

Cyclic AMP

Cyclic AMP (cAMP) is a second messenger important in many biological processes, transmitting the effects of hormones like adrenaline and glucagon at the cellular level.

Oxytocin

A hormone and neurotransmitter involved in childbirth and lactation, also associated with empathy, trust, sexual activity, and relationship-building.

Positive Feedback

A mechanism in which an output in a system intensifies the response or increases the production of that output.