Permeability of which ion is affected by a positive feedback mechanism once threshold is reached?

a. sodium
b. potassium
c. calcium
d. chloride
e. protein


A

Anatomy & Physiology

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Vitamin _____ is crucial for the absorption of calcium from the gastrointestinal tract. Therefore, a deficiency in this vitamin may result in rickets and other bone abnormalities

Fill in the blank with correct word.

Anatomy & Physiology

The anaerobic reactions of cellular respiration take place in the

A) mitochondria. B) nucleus. C) cytoplasm. D) ribosomes.

Anatomy & Physiology

What is the main function of the urethra?

What will be an ideal response?

Anatomy & Physiology

The chest wall is anatomically configured to contract inwardly, so that when the thorax is opened surgically its walls collapse.

Answer the following statement true (T) or false (F)

Anatomy & Physiology