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iogann1982 [59]
3 years ago
13

Oh! Alright. Please note that female pet birds can also lay eggs, even without the presence of a male. Such eggs are infertile a

nd will not hatch, even if incubated. While egg laying can occur in any breed, it is most common in cockatiels, lovebirds, budgies, canaries, and finches.
Health
1 answer:
jekas [21]3 years ago
6 0

Answer:

Yes we have a pet

Explanation:

we have a pet bird that can lay eggs but can not have them hatch unless the bird is breed

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10 points!! <br> Assess how form serves function in the male sperm cell.
motikmotik

Answer:

the form of a sperm cell helps it to travel apon ejaculation and impregnation of a female.

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2 years ago
Which of these is a malignant disorder of lymphatic tissue characterized by progressive enlargement of the lymph nodes?
miv72 [106K]
The answere is (D)
or els you can figure out the answere from this,
<span>The answer is Hodgkin's disease. Sickle cell anemia is when red blood cells are deformed into a sickle-like shape and can not carry blood properly. A gastric ulcer is self-explanatory. Cirrhosis is a disease of the liver that occurs when the liver is exposed to long-time damage.</span>

8 0
3 years ago
The muscarinic1 and muscarinic3 of the parasympathetic nervous system (PNS) are similar in function.
svetlana [45]

Answer:

   Muscarinic receptors 1 and 3 are coupled to Gq protein, excitatory subnunit, which increase intracellular calcium, promoting: contraction of the sphincter muscle of the iris, increased intestinal motility, bronchoconstriction, increase secretion of histamine in stomach.

Explanation:

  In the parasympathetic nervous system (PNS), the acting neurotransmitter is acetylcholine (Ach). Ach acts on two types of receptors: nicotinic receptors and muscarinic receptors.  When Ach is released into the synaptic cleft, it then binds to a particular receptor and then performs its actions.

   Muscarinic receptors (M) are coupled to G protein. We have several muscarinic receptors, from 1 to 7. M 1, 3 and 5, the odd ones, are coupled to the Gq protein, an excitatory subunit, which activates a cascade, leading to increased intracellular calcium.  M 2 and 4, the pairs receptors, are coupled to the Gi protein, an inhibitory subunit, as it increases the potassium permeability.

  These receptors have different locations: M1 is located in the central nervous system, gastric parietal cells and autonomic ganglia; M2 is located in the heart, and does presynaptic modulation of neurotransmitter release, as I said earlier; M3 located in smooth muscle and glands; M4 located in the central nervous system; and M5 also in the central nervous system.

  A visible effect of Ach's action on an M3 receptor occurs in the eyeball, especially in the sphincter muscle of the iris.  M3 is an excitatory receptor and, when activated by Ach, promotes contraction of the sphincter muscle of the iris, leading to shrinkage of the pupil, a process known as miosis.  Another effect also on the eyeball, and by Ach's action on M3, is increased tear secretion, as the parasympathetic stimulates secretion of our glands, and the tear gland is not left out.  

 Acetylcholine is released, binds to the gastrointestinal system M3 receptor, and promotes increased intestinal motility as well as increased intestinal secretions, which is of paramount importance for digestion.

 The bronchi, by parasympathetic action in M3, contract, thus promoting bronchoconstriction.

 By acting in M1, Ach increase the secretion of histamine in stomach.

.

   

4 0
3 years ago
Question 38
kozerog [31]
The correct answer is B I’m 100% because i had that question before
8 0
2 years ago
Middle adolescence is characterized by __________.
Mademuasel [1]
The correct answer for the question that is being presented above is this one: "d. logical, mature decision making." Middle adolescence is characterized by logical, mature decision making. But in real life, most parents don't even feel the development that is characterized by the middle adolescent.
3 0
3 years ago
Read 2 more answers
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