Autocoids and Histamine

Autocoids and Histamine

Assessment

Flashcard

Biology

University

Medium

Created by

saba shaikh

Used 3+ times

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26 questions

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1.

FLASHCARD QUESTION

Front

What is the origin of the word 'Autocoid'?

Back

Derived from Greek: 'Autos' meaning self and 'Akos' meaning healing substance or remedy.

2.

FLASHCARD QUESTION

Front

What are autocoids?

Back

Diverse substances produced by various cells in the body with intense biological activity.

3.

FLASHCARD QUESTION

Front

What is a unique attribute of autocoids?

Back

They act locally at the site of synthesis and release, often referred to as local hormones.

4.

FLASHCARD QUESTION

Front

How do autocoids differ from hormones?

Back

Autocoids act locally and have short-lived effects, while hormones are released into the bloodstream and act on distant organs with longer-lasting effects.

5.

FLASHCARD QUESTION

Front

Name the five classical types of autacoids.

Back

1. Amine autacoids (e.g., Histamine, Serotonin) 2. Lipid-derived autacoids (e.g., Prostaglandins, Leukotrienes) 3. Peptide autacoids (e.g., Bradykinin, Angiotensin) 4. Cytokines (e.g., interleukins, TNF-α) 5. Several peptides (e.g., gastrin, somatostatin).

6.

FLASHCARD QUESTION

Front

Where is histamine primarily located in the body?

Back

Histamine is mostly found in mast cells, particularly in the skin, gastric and intestinal mucosa, lungs, liver, and placenta.

7.

FLASHCARD QUESTION

Front

What is the difference between mast cell histamine and non-mast cell histamine?

Back

Mast cell histamine is released during allergic reactions causing symptoms like swelling and itching, while non-mast cell histamine is involved in normal body functions like stomach acid secretion.

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