For the following table, mark an X for all the actions performed by the listed muscles.
Muscles acting on the neck | Fibers | Flexion | Extension | Rotation | Lateral flexion | |
Sternocleidomastoid | Unilateral | |||||
Bilateral | ||||||
Scalenes | Unilateral | |||||
Bilateral | ||||||
Splenius | Unilateral | |||||
Bilateral | ||||||
Trapesius | Superior | |||||
Levator scapula | ||||||
Longissimus capitus | ||||||
Semispinalis capitis |
In: Anatomy and Physiology
How would the musculoskeletal system of humans adapt to a low gravity environment? What would their bones and muscles look like? Consider the following parts of the musculoskeletal system in your answer: Bone length, Bone diameter, Bone density, Muscle type, location, and size, Anything else you think is important to the musculoskeletal system.
In: Anatomy and Physiology
The following conditions can be diagnosed by CT scan Heart Disease--a ct scan is used to find calcium deposits in plaque of people with heart disease. A doctor may also order a coronary ct angiogram to get pictures of the arteries in your heart. This patient would be referred to a cardiologist. Emphysema--a ct scan is used to spot focal lucencys (emphysematous spaces) which measure up to 1cm and are located centrally within the second pulmonary lobule. This patient would be referred to a pulmonologist. Liver Masses--on a non contrast ct the masses are usually not seen due to the similarity in density between the mass and the liver tissue. Thus a contrast CT is required. These patients are referred to a hematologist
IN 2-3 LINES WHAT DO YOU AGREE AND HOW WOULD COMMENT?
In: Anatomy and Physiology
When you determined the relative refractory period, you actually recorded the interval when a few neurons entered the relative refractory period. Explain why at this interval only some neurons have entered the relative refractory period.
In: Anatomy and Physiology
In: Anatomy and Physiology
A 24-year-old female visits her GP after having been in an automobile accident three days prior. She reports that while driving in slippery conditions she rear-ended the car in front of her and she was then rear-ended by the car behind her. She was traveling at about 30 mph and her airbags did employ. She reports first responders found no injuries but advised her to follow up with her GP if she developed any unusual symptoms. The woman reports that she seemed fine after the accident but did wake the morning after with a bit of a stiff neck and a headache; she didn't feel this was unusual given the accident and went on about her day. At the end of the next day she had to carry heavy bags up two flights of stairs to her apartment and when almost to her door she felt a zing all the way down her right arm. She immediately put the bags down. When she lifted the bags again her right arm felt numb. She woke this morning with a very stiff neck, stiffness in her upper arm, and “tingles” in her neck and down her entire arm. Musculoskeletal examination revealed limited ability to flex the neck – guarding by the posterior muscles of the neck, reduced ability to extend and flex the elbow, reduced ability to extend the wrist and digit, and general peripheral neuropathy (loss of muscle innervation and cutaneous sensation) to the arm. From your knowledge to date from discussions in the class, and use of critical reasoning, please answer the following questions.
1. What muscles of the neck have been affected?
2. What muscles of the brachium have been affected?
3. What muscles of the antebrachium have been affected?
4. If the woman was in a state of shock she might not have realized a skeletal injury; what skeletal elements (bones) and features would be associated with the effected muscles of the neck? In other words, what specific bones/bone features may have been injured?
5. If the woman was in a state of shock she might not have realized a skeletal injury; what skeletal elements (bones) and features would be associated with the effected muscles of the brachium?
6. If the woman was in a state of shock she might not have realized a skeletal injury; what skeletal elements (bones) and features would be associated with the effected muscles of the antebrachium?
7. Given the woman has peripheral neuropathy (loss of innervation to muscle tissue and cutaneous sensation) of the neck and arm what axial skeletal region has likely been affected?
8. What specific feature of the axial skeletal element would have caused compression of spinal nerves?
9. From the above information (case study and answering the questions) what condition do you believe the woman has as a result of her accident?
10. What diagnostics, if any, would you employ to further investigate the injury – and why or why not?
In: Anatomy and Physiology
26. Veins present with the following features except:
a. valves b. transport blood from body to heart
c. lumen wide than arteries d. Tunica media is the thickest
27. The left side of the head is drain by the
a. left lymphatic duct b. right lymphatic duct c. thoracic duct d.
axillary node
28. The direction of fluid of the lymph is carried away from the
heart
a. T b. F
29. Plasma cells are lymphocytes that
a. produce antibodies b. phagocyte foreign substances
c. produce antigens d. produce reticular fiber stroma
30. Cells that engulf foreign substances and help activate T cell
are
a. T cells b. B cells c. Reticular cells d. Macrophages e. Plasma
cell
31. Lymph nodes bear fewer afferent lymphatic vessels than efferent
lymphatic vessels
a. T b. F
32. The part of the lymph node that house T cell in transit is
the
a. medulla b. hilus c. cortex d. capsule
33. All of these organs are part of the lymphatic system
except:
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches
34. The lymphoid organ that functions primarily during the first
years of life is the
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches
35. Which lymphoid organ stores products of red blood cells, is
site for erythropoietin before
birth, and stores blood platelets?
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches
36. The saclike initial portion of the thoracic duct is the
a. lacteal b. right lymphatic duct c. cisterna chyli d. lymph
sac
37. The structural framework of lymphoid organs is
a. areolar connective tissue b. hematopoietic tissue c. reticular
tissue d. adipose tissue
38. The blood pressure range is greatest in a/an/the:
a. vein b. venule c. capillary d. artery e. arteriole
39. How many different sites are where a pulse can be palpated
above the heart?
a. 1 b. 2 c. 3 d. 4 e. 5
40. Collections of lymphoid tissue (MALT) that guard mucosal
surfaces include all of
following except
a. GI tract b. respiratory tract
c. reproductive tract d. mediastinum e. urinary tract
41. The tricuspid valve is:
a. the left AV valve b. located in the AV junction c. the right AV
valve
42. The layer over the external surface of the heart also called
visceral layer of the heart is the _______
a. endocardium b. myocardium c. epicardium
43. The _______________ , functional supply of the heart, is the
shortest circulation in the body.
a. systemic circulation b. pulmonary circulation c. coronary
circulation
44. The relaxation of the period of the heart refers to:
a. contraction b. preload c. diastole d. systole
45. The term bradycardia refers to:
a. amount of blood at any given time in the hart b. a heart rate
slower than 60 beat per minute
c. stretch of the heart with each contraction d. an impulse of the
AV of 60 times
46. In Tetralogy of Fallot the chamber of the heart that eventually
enlarges (hypertrophies) is the __________.
a. left ventricle b. right ventricle c. left atrium d. right atrium
47. The following are factors used as short terms mechanism to
control arterial blood pressure except
a. atrial natriuretic peptide b. renal regulation c. angiotensin
II
d. antidiuretic hormone e. adrenal medulla hormones
48. When the heart is inefficient to sustain adequate circulation
is called:
a. cardiogenic shock b. vascular shock c. hypovolemic shock d.
septic shock
49. Which component of the lymphatic structures is responsible for
the formation of all formed elements?
a. spleen b. lymph nodes c. thymus d. red bone marrow e.
tonsils
50. Which structure of the lymphatic system initiates the immune
response when an organ is attack by a pathogen or tumor?
a. spleen b. lymph nodes c. thymus d. red bone marrow e.
tonsils
In: Anatomy and Physiology
In: Anatomy and Physiology
1. Define res ipsa loquitur and discuss a specific case history example. Please provide the reference citation (APA, 6th ed.).
2. Identify the four D's of negligence for the physician.
3. List ten ways to prevent malpractice.
4. Identify and explain the three types of damage rewards.
In: Anatomy and Physiology
Trace the pathway of the blood through the heart by placing the following structures in order that the blood passes through starting with the right side of the heart. tricuspid valve aorta right ventricle superior/inferior vena cava mitral valve pulmonary valve left ventricle right atrium left atria pulmonary trunk aortic valve lungs
In: Anatomy and Physiology
Let’s say the synapses of a neuron’s dendrites are filled with glutamate-gated channels which, when activated by glutamate, cause an excitatory postsynaptic potential (EPSP) in the neuron. In one instance, glutamate is released at all of the synapses simultaneously and this leads to an action potential in the neuron.
A) What type of summation of PSPs is this? Why?
B) List the sequence of steps that occur starting from binding of glutamate to the glutamate-gated channels at the synapses and ending with the membrane potential at the axon hillock returning to resting potential at the end of the action potential. (Include all the changes in voltage-gated channels underlying the action potential.)
In: Anatomy and Physiology
Typical anti-depressants create more of this neurotransmitter in the synapse to bind with postsynaptic neurons:
In: Anatomy and Physiology
In: Anatomy and Physiology