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photoshop1234 [79]
2 years ago
10

If a doctor attempts to trigger the patellar tendon reflex and a lack of response occurs, what are potential regions where patho

logy might exist? I) the brain II) the knee III) the spinal cord A. only I B. only II C. only III D. only II and III
Biology
1 answer:
kogti [31]2 years ago
6 0

Option D. Only II and III.(THE KNEE AND THE SPINAL CORD)

What is the patellar tendon reflex?

  • The patellar tendon reflex refers to a kicking-like motion produced by the extension of the knee joint upon the ipsilateral stimulation of the patellar tendon.
  • The reflex is thought to play a role in maintaining balance
  • Striking of the patellar tendon with a reflex hammer just below the patella stretches the muscle spindle in the quadriceps muscle.

What is pathology?

  • Pathology is the medical discipline that provides diagnostic information to patients and clinicians.
  • It impacts nearly all aspects of patient care, from diagnosing cancer to managing chronic diseases through accurate laboratory testing.
  • The sharp tap on the tendon slightly stretches the quadriceps, the complex of muscles at the front of the upper leg
  • In reaction these muscles contract, and the contraction tends to straighten the leg in a kicking motion.
  • Exaggeration or absence of the reaction suggests that there may be damage to the central nervous system

To know more about the patellar tendon reflex, refer:

brainly.com/question/238469

#SPJ4

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atch the statement to the following options.A. One of a pair of chromosomes with similar genetic information and from different
Goryan [66]

Answer:

A. Homologue.

B. Chiasma.

C. Synaptonemal.

D. Synaptonemal.

E. Synapsis.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

Synaptonemal complex can be defined as a network of proteins that is responsible for holding homologous chromosomes (homologues) together.

Generally, a synaptonemal complex (protein lattice) is formed between homologous chromosomes during mitosis and meiosis. Also, synaptonemal complex is important for the formation of the four sister chromatids referred to as tetrads.

Furthermore, the synaptonemal complex (protein lattice) has a tripartite structure which comprises of the following components;

I. SC protein-1 (SYCP1).

II. SC protein-2 (SYCP2).

III. SC protein-3 (SYCP3).

In conclusion, the synaptonemal complex plays a significant role in synapsis, recombination and chromosome pairing.

Matching the various terminologies in genetics with their description, we have;

A. Homologue: one of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.

B. Chiasma: several X-shaped structures may be visible under the microscope and indicate where crossing over has occurred.

C. Synaptonemal: a lattice of protein holds two replicated chromosomes in precise register with one another.

D. Synaptonemal: four chromatids are held together by a zipper-like structure.

E. Synapsis: a process in which pairs of homologous complex chromosomes line up side by side.

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Earthworms, which are land invertebrates, and caecilians, which are amphibians, have evolved with traits that enable them to bur
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Natural selection? Mutation? 
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Sparrows produce an average of 5 eggs in each clutch. If there are more than 5. Parents can't adequately feed the young. if ther
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Explanation:

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An ecologist observes that the diet of a bird species consists primarily of large grass seeds (as opposed to smaller grass seeds
omeli [17]

Lets understand the given passage.

An ecologist <u>observes that the diet of a bird species consists primarily of large grass seeds</u> (as opposed to smaller grass seeds or the seeds of other herbaceous plants found in the area).

<u>He hypothesizes that the birds are choosing the larger seeds because they have a higher concentrations of nitrogen than do other types of seeds at the site</u><u>.</u>

<u>To test the hypothesis, the ecologist compares the large grass seeds with the other types of seeds, and the results clearly show that the large grass seeds do indeed have a much higher concentration of nitrogen.</u>

No, he cannot conclude that the birds select the larger grass seeds because of their higher concentrations of nitrogen. The hypothesis testing done by the ecologist is incomplete as he failed to set up a control in the experiment. The control would have been the birds feeding on large seeds that lack or are low on nitrogen content. This will establish a relation between the bird's diet and the size of the seeds and the nitrogen content of the seeds. It could be true that birds do not care about the nitrogen content but simply prefer larger seed sizes.

Another problem associated with his field experiment is the failure in noting the beak sizes of the birds. The beak size and shape enable a bird to break and eat seeds. Larger beaks fail at breaking open smaller seeds. This observation would add bird beak size as another variable of the experiment.


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3 years ago
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