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motikmotik
3 years ago
10

Todd's father slipped a disk in his back. Dr. Foster explained to the family that the intervertebral disks are composed of _____

___.
A. elastic cartilage.
B. hyaline cartilage.
C. composite cartilage.
D. fibrocartilage.
E. bone.
Biology
1 answer:
vichka [17]3 years ago
5 0

Answer:

D. Fibrocartilage

Explanation:

In order to understand the question, we need to review the structure of intervertebral discs.

Intervertebral discs consist of two parts:

  • <u>NUCLEUS PULPOSUS:</u>

It forms the central part of the intervertebral disc and consists of mucoid substance.

  • <u>ANNULUS FIBROSUS:</u>

It is composed of encircling layers of fibrocartilage and fibrous tissue surrounding the nucleus pulposus

<u>SLIPPED DISC:</u>

It is characterized by the protrusion of nucleus pulposus through the annulus fibrosus accompanied by the compression of spinal nerves.

Patient may present with loss of sensory sensations or pain or both.

<u>CORRECT ANSWER:</u>

From the above review, the correct answer is <u>D. fibrocartilage</u> as it forms the annulus fibrosus.

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Answer:

<u>Cilia</u>

Explanation:

Cilia and flagellum are made up of microtubules.

Cytoskeletal filaments are structures which allow movement. In cilia and flagella, the cytoskeletal filaments are present in the form of microtubules and the primary work of these structures is to facilitate in movement.

Cilia is also present in mammals to facilitate the movement of fluids in cells.

Structurally, there is no difference between cilia and flagella. The only difference between cilia and flagella is in their lengths.

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3 years ago
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Answer: cccccccc

Explanation:

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3 years ago
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Two linebackers tackle a quarterback. One hit him with a force of 105 N and the other hit him with a force of 150 N. They are bo
Setler [38]

The net force on the quarterback when he is hit by two linebackers running eastwards is 255N.

Force is a vector quantity, we must recall that if two forces act in the same direction, we obtain the net force by adding the two forces together. If two forces act in opposite direction, we obtain the net force by subtracting the forces from each other.

Since the both linebackers are running East, the net force is obtained as; 105 N + 150 N = 255 N.

Learn more: brainly.com/question/4913547

5 0
2 years ago
One end of the rope is vibrated to produce a wave with a wavelength of 0.25 m. The
evablogger [386]

Answer:

3) 0.75m/s

Explanation:

The wavelength of a wave is calculated using the formula;

λ = v/f

Where!

λ = wavelength of wave (m)

v = velocity or speed (m/s)

f = frequency of wave (Hz)

According to this question, one end of a rope is vibrated to produce a wave with a wavelength (λ) of 0.25 m and frequency (f) of 3.0 Hz.

Using λ = v/f

v = λ × f

v = 0.25 × 3

v = 0.75m/s.

5 0
3 years ago
Fill in the blanks. The cytochrome b6f is a large multisubunit protein, which accepts electrons from the __________________ . On
densk [106]

Answer:

The cytochrome b6f is a large multi-subunit protein, which accepts electrons from the plastohydroquinone.

One electron moves linearly toward plastocyanin while the other goes through a cyclic process, which effectively pumps more protons into the thylakoid lumen.

Explanation:

The cytochrome b6f is distributed among both grana and stroma thylakoids equally. They are usually large and embedded in the membrane.

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3 years ago
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