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Maksim231197 [3]
3 years ago
8

The portion of the pharynx that receives both air and food is the

Biology
2 answers:
Usimov [2.4K]3 years ago
8 0

Answer: The OROPHARYNX

Explanation: The pharynx (throat ) is a passageway about 12+14sm long,it extends from the posterior nares,and runs behind the mouth and the larynx to the level of the 6h thoracic vertebrae where it becomes the oesophagus.

The pharynx is divided into three parts, nasopharynx(1st portion), oropharynx(2nd portion) and 3rd portion)laryngopharynx.

The oral part of the pharynx lies behind the mouth extending from below the level of the soft palate at the level of the upper art of the body of the 3rd cervical vertebra.the lateral walls of the pharynx blend with the soft palate to form two folds in a collection of of lymphoid tissue called the palantine tonsils.

When swallowing,the soft palate and uvula are pushed upwards,sealing off the nasal cavity and preventing the entry of food and fluid.

The oropharynx receives both air from the nasopharynx and food and air from the mouth.

vampirchik [111]3 years ago
3 0

Answer:

oropharynx

Explanation:

The pharynx, which is sometimes referred to as the throat, is the cone-shaped muscular tube that links the oral and nasal cavity to the larynx and oesophagus. The pharynx, which serves as a passage for movement of food from the mouth to the esophagus and also as an airway, is divided into three parts, namely: the nasopharynx, oropharynx, and laryngopharynx.

The oropharynx is the part that receives both air and food. It is the middle part of the pharynx (throat) found at the back of the soft palate of the mouth and also underneath the nasopharynx.

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Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.

  1. Interneurons relay the impulse to motor neurons in the spinal cord.
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4. Receptors in her toe receive stimuli

3. The sensory neuron generates an impulse.  

1. Interneurons relay the impulse to motor neurons in the spinal cord.

5. Motor neuron signal the leg muscles    

2. She immediately moves her foot.  

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The reflex arc refers to an action mechanism that responds to different stimuli.  It is an involuntary reaction involving different nervous vias. The reflex arc is composed of receptors, afferent nervous fibers, efferent nervous fibers, and effectors.    

Receptors are located in nervous terminals and are widely distributed in the organism. Receptors are capable of receiving stimuli from different nature, and most of them are specialized in one kind of stimuli such as vision, audition, touch, among others. In the exposed example, these sensory receptors were located in the toe, and probably they were touch receptors.

When they receive the stimulus the sensory neuron transforms it into an excitatory nervous impulse that goes to the central nervous system along the afferent nerves. This stage is known as the <u>afferent via</u>, beginning with the environmental information received by sensory receptors, and ending in the arrival of the transcripted message to the central nervous system.

When the central nervous system receives the information, it processes it and sends an appropriate answer according to the stimulus. The message goes along the interneurons to the motor fibers, which are in charge of taking that answer to its destiny, the effectors. Effectors are usually muscles or glands, and they transform the received impulse into a motor answer that executes the reflex action. In the exposed example, the effector in the muscle. This stage is known as the <u>efferent via</u>, beginning in the central nervous system sending an answer impulse and ending in the effector (muscle) executing the answer.

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You can see negative affects on Oceans, snowpack, clouds, and changes in water demand too.

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