PUT THE EVENTS OF MUSCLE CONTRACTION IN ORDER
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Calcium ions attach to the
troponin. This causes the tropomyosin to move away from the actin
active sites.
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An ATP molecule provides
the energy to return the myosin cross bridge back to its original
(cocked) position
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Myosin heads bend and pull
the actin over the myosin
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Myosin cross bridges attach
to the active sites of the actin
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Nerve stimulation causes
Calcium ions to be released from the Sarcoplasmic Reticulum
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In: Anatomy and Physiology
30.Which of the following steps of the cell cycle does a cancer cell never enter? A. G0
B. G1 C. G2 D. M E. S
31.Which of the following abdominopelvic regions overlaps at
least partly with the right lower quadrant?
A. Epigastric
B. Hypogastric
C. Left inguinal
D. Left lumbar
E. Right hypochondriac
32.Which of the following organ systems has a primary function
of immunity? A. Endocrine
B. Lymphatic
C. Muscular
D. Reproductive E. Urinary
33.Which of the following structures would you expect to find in the pleural cavity? A. Atlas
B. Heart
C. Lung
D. Pubis
E. Xiphoid process
34.The region of the body that contains the fibula is also known as the A. Axilla
B. Bucca C. Crus
D. Frons E. Mamma
35.In a long bone, which of the following ossifies first? A. Diaphysis
B. Epiphyseal cartilage C. Epiphysis
D. External Callus
E. Metaphysis
36.The main blood supply in compact bone is found in A. Canaliculi
B. Central canals C. Lacunae
D. Lamellae
E. Osteocytes
37.The interosseous membrane in the leg is an example of a A.
Diarthrosis
B. Synarthrosis
C. Synchondrosis
D. Syndesmosis E. Synostosis
38.When a person sprains her ankle, which of the following motions did her ankle most likely do?
A. Dorsiflexion B. Eversion
C. Inversion
D. Plantar flexion E. Retraction
39.Thick skin is most likely found on the A. Antebrachium
B. Intestinal lining
C. Knee
D. Palm E. Scalp
40.What is the major function of the arrector pili?
A. Causing hairs to stand on end
B. Holding bone to bone
C. Increasing surface area between dermis and epidermis D.
Producing oil
E. Providing cushion in the spine
41. (Extra credit) Which of the following joints is biaxial? A.
Atlantoaxial
B. Elbow (humero-ulnar)
C. Hip
D. Metacarpo-phalangeal joint of digit 4 E. Pubic symphysis
In: Anatomy and Physiology
Question 62
Which of the following is a multiaxial joint?
Question 62 options:
humeroulnar |
|
tibiofemoral |
|
talocrural |
|
interphalangeal |
|
glenohumeral |
Question 64
Joints with a small ROM are usually
Question 64 options:
weak joints with restricted movement. |
|
strong joints with restricted movement. |
|
strong and free-moving joints. |
|
weak and free-moving joints. |
|
synovial joints. |
Help w/ both.
In: Anatomy and Physiology
Question 57
In a chemical synapse, the synaptic bulbs of the presynaptic neuron have _____, while the membrane of the postsynaptic neuron has _____.
Question 57 options:
voltage-gated channels; synaptic vesicles |
|
ligand-gated channels; synaptic vesicles |
|
synaptic vesicles; voltage-gated channels |
|
synaptic vesicles; ligand-gated channels |
|
voltage-gated channels; ligand gated channels |
Question 59
Which of the following is CORRECT?
Question 59 options:
Visceral senses are special senses. |
|
Information for the general senses is carried by free nerve endings. |
|
Sensory neurons for touch can also carry pain impulses. |
|
Somatic senses are special senses. |
|
All of these are correct. |
Question 60
Glaucoma can be dangerous because it increases intraocular pressure.
Question 60 options:
True | |
False |
In: Anatomy and Physiology
In: Anatomy and Physiology
Give one example how the the endocrine system work with the immune system?
In: Anatomy and Physiology
Show effects of certain hormones on urine output
In: Anatomy and Physiology
There are five primary causes of hypoxaemia (low blood oxygen content):
The first four of these can be helped by giving the patient oxygen which in turn increases their arterial PO2. However, giving oxygen has little impact on a patient with a pulmonary shunt.
For each of the above causes, briefly (1-2 sentences) describe how it would lead to low arterial PO2. Then describe why giving a patient 100% oxygen would increase their arterial PO2 (for the first four), and why it would not significantly improve in a patient with a pulmonary shunt. Explain your reasoning. 4 and 5 are the most challenging and will require more description than the first 3. (2-6 total sentences each)
Diffusion Limitation :
Hypoventilation :
Reduced atmospheric oxygen :
V/Q Mismatch:
Shunt
In: Anatomy and Physiology
At about 12 pm, before lunch, Louisa undertakes her daily exercise workout, which involves running continuously for 20 min at ~80% of her VO2 max.
During the period from 5 to 20 min there would be significant changes in the utilisation of carbohydrate and fatty acids when compared to when Louisa was sitting at her desk studying (i.e. at rest). List these changes.
In: Anatomy and Physiology
Describe the anatomy, function, and development of the brain.
In: Anatomy and Physiology
Obstructive shock results from an obstruction of either the great vessels of the heart, or the heart itself. One cause of this is called tamponade (not to be confused with tapenade, an olive spread perfect for picnics or light entrées). Tamponade is caused by a pericardial effusion, build up of fluid in the sack which encloses the heart, or bleeding into the pericardium, either of which compress the heart.
Describe how this would impact stroke volume and ventricular contractility. Explain your reasoning.
In: Anatomy and Physiology
During prolonged steroid treatment, the adrenal glands drastically reduce cortisol production. One of the many roles of cortisol is to upregulate alpha-1 receptors in the body. How could distributive shock occur if a patient who had been on long-term steroids was suddenly taken off them?
In: Anatomy and Physiology
Describe how cardiogenic shock would impact cardiac output and mean arterial pressure, then describe how the autonomic nervous system would respond to this.
How could this response be potentially detrimental to both the heart and organs?
In: Anatomy and Physiology
Brain structures responsible for sexual behaviors. Pick one of the following brain areas: MPOA, Medial Amygdala, vmH, PVN, or SDN. Then, describe in detail what types of symptoms would result if an individual had damage to that area. DO NOT LIST or NAME your brain area! When you respond to the other post, your job is to try to guess what the damaged brain area is, and why you think that is the area. You will be graded on how well you describe the deficits for that brain area.
In: Anatomy and Physiology
Briefly describe and analyze a non-human primate's behavior you have observed...either in the wild, at a zoo, on a documentary, or in one of the videos we've watched for our class. What type of behavior would you categorize it as?
In: Anatomy and Physiology