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Snowcat [4.5K]
3 years ago
13

An open spinal defect characterized by a protrusion of meninges and spinal cord through the defect, usually within a meningeal s

ac, is called :_______
Biology
1 answer:
erastovalidia [21]3 years ago
3 0

Answer:

This question lacks options, options are:

a. meningocele

b. spina bifida occulta

c. Meningomyelocele

d. Arnold-chiari syndrome

The correct answer is c.

Explanation:

Spina bifida is a neural tube defect that usually runs in families. Spina bifida occurs due to an abnormality in the development of the spinal cord in the first trimester of pregnancy. The defect can only be associated with a protrusion of the membrane that covers the spinal cord (meninges), called a meningocele, or with some neural elements, called a meningomyelocele. Spina bifida can cause mild to severe physical and mental disabilities, depending on the size and location of the opening in the spine, and whether the spinal cord and nerves are affected. Myelomeningocele is a defect in which a fluid sac containing part of the spinal cord and nerves exits through an opening in the baby's spine, causing nerve damage. Also called "open spina bifida," this disease causes moderate to severe disabilities, such as trouble going to the bathroom, loss of sensation in the legs or feet and paralysis in the legs.

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What are some of the functions of vascular tissue in seedless plants? (Choose all that apply)
olga2289 [7]

Answer:

Explanation:

Xylem transports and stores water and water-soluble nutrients in vascular plants.

Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.

Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.

7 0
3 years ago
If the release of thyroid hormone (TH) was regulated by a long-loop negative feedback, where would you find the cells that are i
pav-90 [236]

Answer:

Hypothalamus and anterior pituitary gland.

Explanation:

Lower levels of T3 and T4 in the blood or lower metabolic rate serve as signal and stimulate the release of thyrotropin-releasing hormone (TRH) from the hypothalamus. The TRH stimulates the anterior pituitary gland to release thyroid-stimulating hormone (TSH) which in turn makes the thyroid gland to release the thyroid hormones.

The elevated levels of thyroid hormones inhibit the release of TRH from the hypothalamus and that of TSH from the anterior pituitary gland.

Hence, the cells of hypothalamus and anterior pituitary gland would be inhibited by the binding of thyroid hormone to regulate the release of these hormones by a negative feedback mechanism.

8 0
3 years ago
Read 2 more answers
Which body system is not directly connected to itself?
nekit [7.7K]

Answer:

<h3>0 endocrine </h3>

Explanation:

<h3>I hope it helps ❤❤</h3>
8 0
3 years ago
Describe the importance of biomes such as forests, freshwater, and marine biomes? How have human actions affected these biomes?
Allisa [31]

Forest biome:  It gives us medicinal plants, woods for commercial purpose. Forests provides us rubber and fibers that is very important for the industries for making various products. They also contribute to perform ecological  functions such as carbon storage, nutrient cycling, water and air purification. It also provides habitat to the wildlife.

Freshwater biome:  We use fresh water for drinking water, irrigation, sanitation systems, and in industrial factories. Water used from groundwater, rivers and lakes is regained by rain and snowfall.

Marine biome:  It serves huge amount of oxygen into the environment and absorbs the atmospheric carbon dioxide.

As a result of the activity of human there is a significant decrease in the number of trees. The products now used are synthetically made which were made up of natural fibers previously. The water source such as rivers, lakes, and ponds are polluted due to which many water borne diseases are increasing day by day. The accumulation of waste which are found in marine biome are reducing the number of flora present inside marine ecosystem.

3 0
3 years ago
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Describe the cell membrane, cell wall, nucleus, and cytoplasm. which of these structures are you likely to find in a prokaryotic
Morgarella [4.7K]

Answer:

you can see below

Explanation:

Basic Definitions:

Cell Membrane = the semi-permeable structure that surrounds the cell and keeps all of the cells organelles from exploding everywhere.

Cell Wall = the rigid 'armor' of the cell that surrounds it after the membrane. Usually made up of cellulose and ONLY found in plant cells.

Nucleus = A really dense organelle of the cell usually surrounded by two membranes. They contain and protect your genetic material. Basically everything that makes you, you.

Cytoplasm = The watery, salty, and protein filled 'soup' that fills the cell. All organelles float happily in this.

Now Specific Locations:

Eukaryotic cells

have plasma membranes

please mark me brainliest or mark me thanks at leat

only have cell walls if the cells are plants.

They do have a nucleus.

They have cytoplasm

Prokaryotic cells

have plasma membranes

cell walls are usually chemically complexed.

don't have a nucleus

have cytoplasm

Animal cells

only have the plasma membranes.

No cell wall

have a nucleus

have cytoplasm

Plant cells

have both the cell wall

and have a plasma membrane

have a nucleus

have cytoplasm

4 0
3 years ago
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