Watch this animation (http://openstaxcollege.org/l/ stomach1) that depicts the structure of the stomach and how this structure functions in the initiation of protein digestion. This view of the stomach shows the characteristic rugae. What is the function of these rugae?
The Endocrine System: ● a system of ductless glands that work together along with the Nervous System to coordinate and integrate the activities of the body’s cells. Thus, regulating body functions. Endocrine System Nervous System Communication Hormones Neurotransmitters Method: targets: Cells with receptors specific response time & effect slow. metabolic rapid. activities contraction/secretion range of effect widespread; general localized; specific response duration long-lasting short term recovery time slow rapid; immediate Endocrine = ductless glands ● the cells release the product into interstitial fluid (blood or lymph) ● chemical messengers= hormones Endocrine system organs: ● Organs are small and not as valued as other organs ○ example: pituitary- size of pinky but it has a large impact on body ○ Other endocrine organs: ■ Pituitary (anterior and posterior) ■ pineal gland ■ thyroid ■ parathyroid gland ■ adrenal gland Endocrine system- does not display anatomical continuity- organs are scattered throughout the body Target organs - ● comprised of target cells ● has receptors that hormone binds to and affects ○ can cause wide variety of responses: ■ mobilization, maintaining water lev