it is for my kinesiology class discussion

Prolonged exposure to stressful conditions and events results in the continuous production of increased levels of hydrocortisone (cortisol) which, in turn, has differing functional effects upon two limbic structures. a) Name these limbic structures and b) explain how chronic exposure to cortisol differently affects each.

The term ‘innervation ratio’ refers to the average number of muscle fibres that

are innervated by a single motor neuron. Describe the relationship between this ratio and the body’s skeletal muscles.

Do these look correct? (only will be used once)

1. Tonsil
2. Thymus
3. Spleen
4. Lymph node
5. Subclavian vein
6. Thoracic duct
7. Cisterna chyli
8. Bone marrow

_E__  1.   Receives lymph from the body

_D__  2.   Filters lymph, lymphocytes multiply                

_B__ 3.    Where T-cells mature

_C__ 4.    Filters blood, lymphocytes multiply                 

_ F_  5.    Collects lymph from 75% of the body

_G_  6.     Lower dilated portion of thoracic duct

_A_  7.     Traps and destroys inhaled microbes

_H__8. Where B cells mature

Question 1.

Which of the following conditions will result in vasodilation of the arterioles?

A. increase H+; decrease O2; increase CO2

B. decrease H+; decrease O2; increase CO2

C. increase H+; increase CO2; increase O2

D. decrease H+; increase O2; increase CO2

Question 2

Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?

Describe the control of respiration, including the two respiratory groups in the medulla and the 4 factors that affect those groups.

Describe the pathway that air takes beginning with our nose and ending in the bloodstream. Include brief descriptions of each “part” or “area” as the air passes through it.

what two processes might be occurring in specific sections of the renal tubules in order to correct for pH imbalance.?

Calculate the number of ATPs produced if hexanoic acid is completely oxidized to form CO₂. Briefly describe where each NADH or FADH₂ are formed and how each of those is converted into ATP.

5. A. Typically, the brain of a healthy, alert older person features __________ in comparison to the brain of a middle‑aged person:          

a. more neurons with decreased dendritic branching.

b. equal numbers of neurons with decreased dendritic branching.

c. fewer neurons and decreased dendritic branching.

d. fewer neurons and increased dendritic branching.

B. In general, the two hemispheres of the brain are specialized. The left hemisphere of the        brain emphasizes __________, while the right side of the brain emphasizes __________:

a. L=visual interpretation, locomotor control, homeostatic regulation;

            R=aesthetic analysis, emotional assessment, auditory processing.

b. L=analytical processing, linguistic activity, sequential analysis;

            R=visual interpretation, analytical procedures, tactile assessment.

c. L=sequential processing, analytical procedures, linguistic activity;

R=integrative activity, problem solving, emotional assessment.

d. L=auditory processing, linguistic productivity, sequential problem solving;

            R=sequential analysis, homeostasis, olfaction, and virtuousness.

C. In general, animals that are perceived by scientists as being relatively intelligent possess __________:

a. relatively large semantic memory capacities.

b. relatively large episodic memory capacities.

c. relatively large sensory memory capacities.

d. relatively well developed explicit memory performance.

e. humans.

It is said that the control of movements is "goal oriented" and it is assumed that body movements are controlled similar to what we know from the control of eye movements, where the superior colliculus has a very important and essential key function. Provide a real world example that illustrates and describes the significance and importance of such type of control of movement, and which captures all major key aspects of this type of control of movements.

Please actually answer the question, the other answer was taken from a research paper that did not answer the question.

Scenario: A cheerleader is complaining of pain over the right hand/wrist. You determine that the cheerleader fell on an outstretched hand while performing a backflip at practice the previous day. Observation reveals minor swelling but no discoloration or deformity. Palpation reveals sharp pain in the anatomic snuffbox.

The injury is a scaphoid fracture

1.Discuss the injury and differential diagnosis.
2.Explain what steps you would take in managing and treating her injury.
3.Discuss the negative outcome that could result for the patient if an athletic trainer chooses conservative treatment prior to making a referral.

1. Why are the hypothalamus and the pineal body considered part of the endocrine system as well as the nervous system?

1)AV block refers to a condition where there is a longer-than normal conduction delay at the AV node. There are different degrees of AV block. Sometimes conduction is only slightly delayed, and sometimes conduction is blocked entirely. Which of the following will not be observed in someone with AV block (of any severity).

incorrect answer i selected)Atrial and ventricular systole occur at the same time.

correct answer )Atrial contraction rate is slower than ventricular contraction rate.

2)Which of the following statements about the Neuromuscular Junction (NMJ) is CORRECT:

incorrect answer i selected)Blocking the actions of acetylcholine esterase (AChE) will prevent the opening of ACh receptor channels and reduce intracellular [Na+] in muscle cells.

correct answer ) In healthy muscle, an action potential in a motor neuron will always be followed by action potentials in the muscle fibers that are innervated by that motor neuron.

Can you please explain to me why the answer i selected is incorrect and why the correct answer is right for the both questions. Please explain.