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Evgen [1.6K]
1 year ago
5

In addition to nourishing the epidermal cells, the dermal blood vessels function in:_____.

Biology
1 answer:
shutvik [7]1 year ago
4 0

The dermal blood arteries work in dermal papillae to hydrate the epidermal cells.

<h3>What are dermal papillae used for?</h3>

The term "dermal papilla" can also be (DP). It is described as the hair follicle of an epithelial progenitor cell's chemical and physical niche. The dermal papilla's main job is to produce the hair shaft and rejuvenate the cycling section of the hair follicle. Dermal papillae are important because they reinforce the bond between the dermis and epidermis and reduce friction-related damage in places that are often used. Moreover, The dermis has a rough appearance thanks to the papillae, which interlocks with the epidermis above it to reinforce the bond between the two layers of skin. The papillae produce epidermal ridges on the palms and soles. These epidermal ridges give rise to fingerprints.

To learn more about dermal papilla, visit:

<u>brainly.com/question/28214941</u>

#SPJ4

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The greenhouse effect plays a major role in the climate of a planet. Visit the Greenhouse Effect AstroTour, and use what you lea
Lesechka [4]

B. If there were no greenhouse effect, liquid water would not exist on the surface of the Earth

D. The Earth has reached thermal equilibrium, emitting the same amount of energy into space as it absorbs from the Sun.

E. The more carbon dioxide there is in an atmosphere, the stronger the greenhouse effect will be

Explanation:

The greenhouse effect plays major role in the climate of our planet in diverse ways:

  • it is responsible for the existence of liquid water on the surface of the earth.
  • it allows the earth to reach an equilibrium with space in exchange of thermal energy.
  • carbon dioxide concentration in the atmosphere has huge roles.

The greenhouse effects results from the abundance of greenhouse gases in the atmosphere. These gases are able to prevent long wave solar radiation from leaving the surface of the earth. When the gases interacts with the radiation, it produces heat that warms the earth surface. Examples of these gases are carbon dioxide, methane, water vapor e.t.c.

The warming of the surface helps to free freshwater trapped as ice and keeps it in the liquid form throughout.

In this exchange of energy, there is a balance between the amount of heat absorbed and radiated back into the atmosphere. As energy enters the earth, it is also radiated out into space. This helps to keep the earth temperature in balance.

Learn more:

Greenhouse emission brainly.com/question/4580761

#learnwithBrainly

7 0
3 years ago
Check all that apply as characteristics of myelinated axons. Check All That Apply Myelinated axons transmit nerve impulses via c
stiv31 [10]

Answer:

Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.

Myelinated axons are more energy efficient than unmyelinated axons.

Explanation:

Neurons are cells that specialize in transmitting messages to each other using a type of electrical signal. These signals carry information from outside your body to the brain, while others are the instructions for the various organs, glands and muscles to carry out functions.

Neurons receive these signals from other neighboring neurons through their dendrites. The signal then travels to the soma of the neuron, which is the main body of the cell, and finally<u> travels down the axon to the synaps</u>e (space between the end of a neuron and another cell). The axon is a neuronal extension through which the electrical signal travels, extending from the soma to other neurons.

<u>There may be layers of myelin, which consist of a layer of fat, covering the axons and where they have the function of acting as insulators to help keep the electrical signal inside the cell, which makes it move faster increasing the speed of transmission of the nerve impulse</u>.

1) Myelinated axons transmit nerve impulses via continuous conduction. FALSE. In the axon, nodes of Ranvier are found at regular intervals along the length of the axon in the myelin sheath that surrounds it. These are small spaces that expose the axon membrane to the extracellular fluid and serve to allow the nerve impulse to travel faster, in a jumping manner and with less chance of error.

2) Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons. FALSE. In an unmyelinated axon, the movement of voltage across the membrane is due to ion flux that is limited by the time it takes for sodium ions to diffuse into the axon. Myelinated axons conduct faster because they are shorter than unmyelinated axons. In the latter, transmission is continuous but slower.

3) Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter. TRUE. The action potential conduction jumps from node to node, thereby they need fewer voltage-gated channels. Unmyelinated axons need voltage-gated channels in along the entire axon.

4) Myelinated axons are more energy efficient than unmyelinated axons. TRUE. The rate at which sodium input through one node can depolarize the axon at the next node is related to the current and capacitance across the membrane. Myelinated axons have faster action potential conduction because it jumps from node to node, thereby they use less energy because they don't have to travel the entire length.

5) Myelinated axons would be unaffected by diseases that attack the CNS. FALSE. For example, Multiple sclerosis (MS) is a demyelinating disease of the CNS in which the immune system attacks the myelin sheath or the cells.

6 0
3 years ago
I need help with these two questions
ahrayia [7]

Answer:

2.5 ft and 24 in cubed your welcome

Explanation:

:)

3 0
2 years ago
In C3 plants the conservation of water promotes _____. In C3 plants the conservation of water promotes _____. photorespiration a
julia-pushkina [17]

Answer:

The correct answer is "photorespiration".

Explanation:

Photorespiration is a process in plants, where molecular oxygen is taken in a light-dependent  manner. Photorespiration is often considered a wasteful pathway because it competes with the Calvin cycle, which is much more efficient. In C3 plants the conservation of water promotes photorespiration. This occurs when the C3 plants close its stomata because the environment its too hot, or the carbon dioxide concentration drops to about 50 ppm.

6 0
3 years ago
the anterior pituitary hormone that controls the release of glucocorticoids from the adrenal cortex is __________.
yaroslaw [1]

Answer:

Adrenocorticotropic Hormone (ACTH)

Explanation:

6 0
3 years ago
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