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2 years ago

Explain what type of stimulus each sense organ responds to and how.

Biology

1 answer:

zalisa [80]2 years ago

4 0

The sense organs contain receptors that are sensitive to stimuli.

The nervous system consists of the central nervous system - brain and spinal cord -and peripheral nerves. Nerve impulses travel through the axons of neurones - nerve cells. Reflex actions are fast, automatic and protective responses.

Human vision is binocular, which gives us a good perception of depth. Vision defects include short-sightedness, long-sightedness and colour blindness.

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Which of the following statements correctly describes the activation of autonomic nervous system function within the circulatory

balandron [24]

Answer:

Sympathetic nervous system activation constricts arteries found within the salivary glands

Explanation:

The ANS controls the involuntary contraction of the heart cardiac muscles, glands, intestine,the peripheral resistance of vascular systems, and the rate of pumping of the blood by the heart.

Thus, the ANS system during stressful conditions increases the blood pressure,heart rate, constrict blood vessels in glands and intestine and dilate the pupils, in anticipation for fight or flight.

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2 years ago

Tissue found in the brain that contains ____________ cells is called nervous tissue. layers of closely packed cells that are fou

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Neruron is neuropipet compounds Amino acids

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2 years ago

Directions: This group of questions consists of five lettered headings followed by a list of phrases or sentences. For each phra

rewona [7]

Answer:

C. CALVIN CYCLE(LIGHT INDEPENDENT REACTIONS OF PHOTOSYNTHESIS.

Explanation:

Photosynthesis is the process whereby green plants manufacture their food (organic matters in form of glucose) from carbon IV oxide and water molecules in the presence of sunlight.

The glucose formed undergoes two purposes; provision of energy and in the fixing of carbon.

This process involved two steps : The light dependent process and the light independent (Calvin cycle).

The light dependent reaction takes place in the thylakoid membrane and requires supply of light energy.

ATP and NADPH are formed, water molecules are also formed.

The light independent reaction occurs in the stoma and does not require light energy. The process used the ATP and NADPH formed from the light dependent reaction to fix carbon and produce three carbon sugars.

So the Calvin cycle light independent reaction is involved in the fixing of carbon molecules into organic molecules in the absence of sunlight and the ATP and NADPH formed from the light dependent process of photosynthesis.

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2 years ago

Dr. Ben Dantzer, a faculty member here at Michigan, studies red squirrels that live in the boreal forest. The boreal forest cont

seraphim [82]

Answer: herbivore, eukaryote, primary consumer

Explanation:

The red squirrel can be described by the following features.

1. Herbivore: A herbivore is an animal which is dependent upon the plant and their products for it's food requirement. Here, the red squirrel is the herbivore because it is dependent upon the spruce tree seeds for their food requirement.

2. Eukaryote: A eukaryotic organism is the one which has well define nucleus and encloses the genetic material in the nucleus. The red squirrel is a complex eukaryotic organism.

3. Primary consumer: In a food chain a primary consumer is an organism which is dependent upon plants and their food products for energy and food needs. The red squirrel is the primary consumer this is because of the fact that it consumes on the seeds of the spruce trees.

3 0

2 years ago

Read 2 more answers

All of the following are functions of the central nervous system except it interprets signals from the external environment it t

jolli1 [7]

Explanation:

It sends message directly to muscles and glands

5 0

2 years ago