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pantera1 [17]
3 years ago
7

The electric signal for a contraction passes rapidly from one heart muscle cell to the next by way of

Biology
1 answer:
malfutka [58]3 years ago
4 0

Answer;

-Gap junctions

Explanation;

-Gap junctions are a specialized intercellular connection between a multitude of animal cell-types. they are organized collections of protein channels in cell membranes that allows ions and small molecules to pass between adjacent cells.

-Gap junctions allow the exchange of ions, second messengers, and small metabolites between adjacent cells and are formed by two unrelated protein families, the pannexins and connexins.

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What does Louis Pasteur mean with “the role of the infinitely small in nature is infinitely large?
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<span>He meant the micro-organisms (microbes) are very small living organisms but plays an important role in maintaining  life on earth. Microbes fix gases and break down animal matter and dead plants into simpler substances that are used at the beginning of the food chain.  Pasteur shows that vaccines against infectious diseases can be manufactured. </span>
6 0
3 years ago
Answer please thanks
Nata [24]
The first answer
Hope this helps!!
3 0
3 years ago
To my understanding, the nucleolus synthesizes DNA into rRNA, as well as completed proteins are assembled with rRNA and sent out
ratelena [41]

Answer: Rrna is a part of ribosome that helps make protein and also links amino acids.

Explanation:

8 0
3 years ago
What organs are being affected from dwarfism???? And how????
Alexandra [31]

Pituitary dwarfism is caused by problems arising from the pituitary gland. The pituitary gland, also called the hypophysis, is a gland at the base of the brain that produces many different hormones. This gland is divided into the anterior (front) and posterior (back) halves. The anterior pituitary produces six hormones: growth hormone, adrenocorticotropin (corticotropin), thyroid stimulating hormone (thyrotropin), prolactin, follicle stimulating hormone, and lutenizing hormone. The posterior pituitary gland only produces two hormones: antidiuretic hormone (vasopressin) and oxytocin.

The growth process begins in the lower part of the forebrain in a small organ called the hypothalamus. The hypothalamus releases hormones that regulate the production of other hormones. When the hypothalamus releases growth hormone-releasing hormone (GHRH), the anterior pituitary is stimulated to release growth hormone (GH). Growth hormone then acts on the liver and other tissues and stimulates them to secrete insulin-like growth factor-1 (IGF-1). IGF-1 directly promotes the development of bone and muscle, causing bones to grow in length, and muscles to increase protein synthesis (make more protein).

Since growth is a complex phenomenon, it may be slowed down or stopped by abnormalities arising at any point in the process. Thus, dwarfism can result if there is a deficiency in any of these hormones, if there is a failure in the receptor cells receiving the hormonal stimuli, or if the target cells are unable to respond.

At its most basic, pituitary dwarfism results from decreased production of hormones by the anterior pituitary. When none of the hormones of the anterior pituitary are adequately produced, this is called panhypopituitarism. A common form of pituitary dwarfism is due to deficiencies in the production of growth hormone (GH). When less GH than normal is produced during childhood, an individual's arms, legs, and other structures continue to develop in normal proportions, but at a decreased rate.

<span>

hopre i helped</span>
7 0
3 years ago
the distance between jupiter and the sun is 5.2 au whats the diffrence in millions of kilometers? one au is about 150 million ki
Mrrafil [7]
I believe it would be 780 million km. 

5.2 AU times 150 million km.

hope this helps
3 0
3 years ago
Read 2 more answers
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