How does the Rubella Virus pass from mother to placenta to fetus, causing congenital rubella syndrome?

Does the virus enter through gas exchange? If so, how?

From there, how does the rubella virus infect the cells of the fetus at a molecular level?

Thank you!

How is keratin is formed (mixture of keratin fibers & keratohyalin)

Describe the development of the eye and the distinct neuron pathways that allow for the complex processing of visual information.

• What is the optic placode and where does it originate?
• The temporal and nasal retinal fields are distinctly innervated. What causes the embryological difference between these structures?
• How does neuronal pathfinding work, both in general and in the optic nerve specifically?
  • What causes decussation in the optic chiasm?
  • Why do only some of the neurons decussate?
• How does the brain develop a map of the visual field?

Why is the presence of arteriosclerosis in the older person result in increase of systolic pressure and decrease in diastolic pressure?

Beginning with the aorta, what is the general arrangement of vessel classes of the systemic circuit, ending with the superior and inferior venae cavae.

Question 16 options: When giving a definition of HEMOGLOBIN, one must detail its molecular structure. Its 3 main chemical molecules are the 4 (?) chains, 4 (?) molecules and in the core of the latter, 4 elements of (?). Its main function is the transport of 2 important (?) in the body: (?) which is considered a nutrient product and (?) which is in part a waste product.

Given knowledge of local regulation of gas transport, the oxygen-hemoglobin saturation curve, and neural control of respiration, give at least five reasons why exercising muscles that use more oxygen and produce more carbon dioxide, lactic acid and heat would have more oxygen delivered to them.

1. The combination of the proximal and distal versions of the articulation mentioned above provides for a distinct type of joint motion discussed in class. Which of the following are those joint motions (choose all that apply)?

a. rotation b. Combination c. flexion d.supination e.abduction f. adduction g. circumduction h. extension i. pronation

2. Which of the following bones/features are included in the pelvic girdle (choose all that apply)?

femure ilium sacrum pubis pubic symphesis ischium coccyx

When a HUMAN has an abnormal RBC or WBC count, whether it be high or low, it will lead to some kind of disorder. Therefore, indicate for the following specific situations, whether the person would have: HIGH RBC, HIGH WBC, LOW RBC or LOW WBC (indicate only one for each): (1) anemia (2) COPD (3) leukemia (4) rheumatoid arthritis

Question 6 options: The color of the neutrophil's (?) is a very light pink or blue and its nucleus has many (?) as it ages. Because it has the capacity to ingest and destroy certain intruders and or particles, it takes part in the process known as (?).

Explain how motor signals travel from the PMC to the extremities and how sensory information travels from the body’s exterior to the brain. You needn’t worry about left and right with the PMC or the PSC.In this assignment, you should mention the following vocabulary: decussation, medulla oblongata, homunculus, receptors, spinal cord, spinal nerves.