Answer:
The two major differences lies in the function and support system.
Explanation:
The two major differences between an endocrine and an exocrine system are as follows –
a) An endocrine system releases its produce (hormones) into the connective tissue i.e blood while the exocrine system releases hormones directly into the ducts so that it could reach the targeted tissue directly.
For example – the Adrenal gland is an endocrine gland that secretes adrenaline directly into the blood. The salivary gland is an exocrine gland that releases its produce into the collecting duct leading to mouth. However, Pancreas is both endocrine and exocrine gland.
b) The endocrine system cannot work alone therefore it works in coordination with the nervous system to control actions and balance the body. However, the exocrine system works independently
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The tolerable upper intake of zinc for an adult is 40 mg per day.
But the recommended daily intake of Zinc (RDA) is 15 mg per day for an adult. Nevertheless, this contribution must be adapted according to your age and your activity. Attention, in case of excessive excess, zinc can become toxic.
The tolerable dose (without side effects) can be up to 40 mg per day, it is prescribed in case of infection as during cooling. Attention in case of treatment with 40 mg of zinc per day, the maximum duration of treatment is 4 days.
1. The right answer is A nerve cell stimulates a muscle cell to contract (it is intercellular communication).
Cellular communication is the set of mechanisms that allow a cell, tissue, and organism to receive, interpret and respond to signals from other cells or its environment.
All cell types have these mechanisms but some have developed them more:
*the nervous system,
* organs of the senses,
* endocrine system,
*immune system.
This allows the body to maintain its homeostasis, its balance, allowing the interaction between these systems.
2. The right answer is the enzyme-linked receptor.
Receptor-enzymes associate on the same protein of the plasma membrane the functions receptor (mediator binding) and effector (enzymatic activity at the origin of intracellular message transduction): these are catalytic receptors. Thus, the receptor itself has enzymatic activity and the fixing of the messenger modulates this activity which may be of several types:
*tyrosine kinase
*tyrosine phosphatase
*receptors with guanylate cyclase activity
The unexpected finding discovered during Darwin's voyage that supported Lyell's ideas was fossils of ocean organisms found high in the Andes Mountains.
