structure and function Flashcards
Which type of healing occurs when a clean laceration or surgical incision is closed primarily with sutures, steri-strips or skin adhesive?
Primary Intention Healing
Which type of healing closely resembles endochondral ossification?
Secondary Intention Bone Healing
read the q - ossification is bone
Which type of healing refers to the healing of an open wound from the base upwards by laying down new tissue?
Secondary Intention Healing
Which type of healing is the reestablishment of the cortex without the formation of a callus?
Occurs when reduction, immobilisation and rehabilitation are appropriate.
Primary Intention Bone Healing
Which type of healing involves the classical stages of injury -
1. haemorrhage inflammation
2. primary soft callus formation
3. callus mineralisation
4. callus remodelling
Secondary Intention Bone Healing
Which type of blood cell is a granulocyte with tiny light staining and difficult to see granules?
The nucleus is frequently multi-lobed with lobes connected by thin strands of nuclear material. Capable of phagocytosis foreign cells, toxins and viruses. Can account for 50-70% of leukocytes or more in the face of an acute infection.
Neutrophils
Which type of blood cell is a granulocyte with large acidophilic granules that stain pink or red?
The nucleus usually has 2 lobes connected by a band of nuclear material, capable of phagocytosing antigen-antibody complexes and are particularly effective against the larval form of parasitic worms. Usually < 5% of the WBC count but may increase if infected with parasitic worms.
Eosinophils
Which blood cell is a granulocyte packed with large granules that stain deep blue to purple which may be so dense as to obscure the nucleus?
Granules constrain histamine and heparin. Key player in inflammatory reactions and allergies and generally <1% of the WBC but likely to increase if infected with chicken pox.
Mast Cell
Which blood cell is a relatively small agranular cell with very little cytoplasm and a big nucleus?
Key player in the adaptive immune response and will increase in response to chronic infection and decrease if HIV progresses to stage 3.
T lymphocyte
Which type of blood cell is a large agranular leukocyte with a kidney bean shaped nucleus?
Differentiates when they leave the circulation, capable of phagocytosis.
Monocyte
A frequently encountered patient complaint that can present with a number of associated factors including erosion and abrasion.
Dentine Hypersensitivity
Most likely carried by the lateral spinothalmic pathway:
- allodynia
- dentine sensitivity
- trigeminal neuralgia
- nociception
- lancinating pain
Lancinating Pain
(sharp pain)
Neuropathic pain involving non-nociceptive neurones:
- allodynia
- dentine sensitivity
- trigeminal neuralgia
- nociception
- lancinating pain
Allodynia
(non-nociceptive = non-painful)
Most commonly caused by nerve compression by, for example, a blood vessel:
- allodynia
- dentine sensitivity
- trigeminal neuralgia
- nociception
- lancinating pain
Trigeminal Neuralgia
The neural process of encoding and processing noxious stimuli:
- allodynia
- dentine sensitivity
- trigeminal neuralgia
- nociception
- lancinating pain
Nociception
The Pancreas
The control of secretion in these cells is multifactorial and involves direct effects of nutrients as well as paracrine regulation by insulin.
a. acinar cells
b. alpha cells
c. beta cells
d. duct cells
b. Alpha Cells
(secrete glucagon as a response to low blood glucose).
The Pancreas
The primary function of these cells is regulated by the ratio of ATP to ADP via changes in membrane potential mediated by the KATP potassium channel.
a. acinar cells
b. alpha cells
c. beta cells
d. duct cells
c. Beta Cells
The Pancreas
Premature activation of proteins exocytosed by these cells is the proximate cause of pancreatitis.
a. acinar cells
b. alpha cells
c. beta cells
d. duct cells
a. Acinar Cells
The Pancreas
Individuals with selected HLA class II haplotypes are at increased risk of a life altering chronic condition mediated by interaction between these cells and activated auto reactive T cells.
a. acinar cells
b. alpha cells
c. beta cells
d. duct cells
c. Beta Cells
The Pancreas
Aberrant epithelial bicarbonate secretion caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene in these cells is associated with several disease including cystic fibrosis and pancreatitis.
a. acinar cells
b. alpha cells
c. beta cells
d. duct cells
d. Duct Cells
Diabetes Medication
Acts to lower the circulating glucose activity by reducing the Transfer Maximum for glucose via reversible inhibition of SGLT2.
a. acarbose
b. dapaglifozin
c. glibenclamide
d. metformin
b. dapaglifozin
Diabetes Medication
A first-line glucose lowering medication that has been available in the BNF since 1958 whose mechanism of action remains unclear. May be used prophylactically in those at high risk of type II diabetes.
a. acarbose
b. dapaglifozin
c. glibenclamide
d. metformin
d. metformin
Diabetes Medication
A second-line glucose lowering medication that acts by blocking starch metabolism and which is commonly used in China when lifestyle interventions can no longer achieve HbA1c targets.
a. acarbose
b. dapaglifozin
c. glibenclamide
d. metformin
a. acarbose
Diabetes Medication
A sulfonylurea first developed in the 60s that acts to increase insulin release by inhibiting ATP-sensitive potassium channels in beta cells of the endocrine pancreas.
a. acarbose
b. dapaglifozin
c. glibenclamide
d. metformin
c. glibenclamide
Diabetes Medication
An oral medication that may be used in conjunction with sulfonylureas that acts on nuclear (steroid) receptors in muscle adipose tissue to reduce insulin resistance.
a. acarbose
b. dapaglifozin
c. glibenclamide
d. metformin
e. pioglitazone
e. pioglitazone
Metabolism
The reduced form of a coenzyme that acts as a redox agent. An excess is associated with alcohol metabolism and fatty liver disease.
a. acetyl coA
b. citrate
c. fatty acid
d. NADH
e. pyruvate
d. NADH
Metabolism
A product of both glycolysis and Beta oxidation that carries C3CO into the Citric Acid Cycle where it is oxided to carbon dioxide and water.
a. acetyl coA
b. citrate
c. fatty acid
d. NADH
e. pyruvate
a. Acetyl CoA
Metabolism
At the branch point of the catabolic sequence of oxidative metabolism in the TCA cycle and the gluconeogenic pathway from C3 precursors.
a. acetyl coA
b. citrate
c. fatty acid
d. NADH
e. pyruvate
e. Pyruvate
Metabolism
Present in the blood as an ester in association with glycerol and a major component of adipose tissue.
a. acetyl coA
b. citrate
c. fatty acid
d. NADH
e. pyruvate
c. Fatty Acid
Metabolism
An inhibitor and activator of enzymes located at the entrance and/or exit of glycolysis, TCA cycle, gluconeogenesis and fatty acid synthesis.
a. acetyl coA
b. citrate
c. fatty acid
d. NADH
e. pyruvate
b. Citrate
Neurotransmitters in the Brain
Associated with a syndrome that may be triggered by methamphetamine, particularly in combination with other drugs such as SSRI and antidepressants. When severe, symptoms include high fever, seizures and irregular heart beats.
a. acetylcholine
b. enkaphalin
c. dopamine
d. serotonin
d. Serotonin
(think what SSRI stands for)
Neurotransmitters in the Brain
Active at a different subtype of the same family of receptors that mediate the response to morphine.
a. acetylcholine
b. enkaphalin
c. dopamine
d. serotonin
b. Enkephalin
Neurotransmitters in the Brain
Binds preferentially to delta rather than mu receptors and may have a role in resilience to chronic stress.
a. acetylcholine
b. enkaphalin
c. dopamine
d. serotonin
b. Enkephalin
Neurotransmitters in the Brain
Deficiency leads to a chronic neurological condition that may be treated using a blood-brain permeable precursor.
a. acetylcholine
b. enkaphalin
c. dopamine
d. serotonin
c. Dopamine
Neurotransmitters in the Brain
One of two neurotransmitters that play a central role in development and maintenance of addiction, particularly in substances that induce weak or no somatic dependence.
a. acetylcholine
b. enkaphalin
c. dopamine
d. serotonin
c. Dopamine
Substances of Abuse
Induces tachycardia, tachypnoea, hypertension, increased body temp, increased attention span, increased libido. Users experience nausea, dry mouth and bad breath, dilated pupils, tremors and muscle twitching.
a. alcohol
b. cocaine
c. marijuana
d. LSD
e. methamphetamine
e. methamphetamine
Substances of Abuse
Users experience dry mouth and nose, bad breath, frequent lip licking.
Excessive activity, difficulty staying still, lack of interest in food or sleep.
Personality-wise, they may be irritable, argumentative, nervous and talkative but conversation lacks continuity.
a. alcohol
b. cocaine
c. marijuana
d. LSD
e. methamphetamine
b. cocaine
Substances of Abuse
Odour on the breath and intoxication, difficulty focussing and a glazed appearance of the eyes. Users may have uncharacteristically passive behaviour or argumentative, flushed skin.
a. alcohol
b. cocaine
c. marijuana
d. LSD
e. methamphetamine
a. alcohol
Substances of Abuse
Users may experience rapid, loud talking and bursts of laughter in the early stages before feeling sleepy later on. Inflammation in white of eyes and pupils unlikely to be dilated.
a. alcohol
b. cocaine
c. marijuana
d. LSD
e. methamphetamine
c. marijuana
Substances of Abuse
Users have extremely dilated pupils, warm skin, excessive perspiration and distortion of senses.
a. alcohol
b. cocaine
c. marijuana
d. LSD
e. methamphetamine
d. LSD (lysergic acid diethylamide)
TNM Tumour Classification
The cancer is 2cm or smaller. It is not growing into nearby tissues and has not spread to nearby lymph nodes or to distant sites.
T1, N0, M0
TNM Tumour Classification
The cancer is any size and is growing into nearby structures such as the base of the skull, it has not spread to nearby lymph nodes or to distant sites.
T4b, N0, M0
(4b is growing into structures such as the skull)
TNM Tumour Classification
The cancer is larger than 4cm and has spread to 1 lymph node on the same side as the primary tumour. It has not grown outside of the lymph node which is no larger than 3cm and has not spread to distant structures.
T3, N1, M0
TNM Tumour Classification
The cancer is larger than 4cm and is growing into the jaw. Has spread to 1 or more lymph nodes on the opposite side of the primary cancer and none are larger than 6cm. No spread to distant structures.
T4, N2, M0
TNM Tumour Classification
The cancer is no larger than 4cm and has spread to 1 or more lymph nodes on the opposite side of the primary cancer or both sides of the neck, none larger than 6cm. No spread to distant structures.
T0-T2, N2, M0
Types of Cancer
A type of cancer with 2 main categories, one of which present with Reed Sternberg cells.
Lymphoma
(RS cells are abnormal lymphocytes = LYMPHoma)
Types of Cancer
The most prevalent type of cancer worldwide. Originates in secretory cells.
Adenocarcinoma
Types of Cancer
Accounts for around 85% of all malignancy and can be of organ, gland and epithelial origin.
Carcinoma
Types of Cancer
A type of cancer that is found in connective and supportive tissue such as bones, cartilage and muscle.
Sarcoma
Types of Cancer
A type of cancer responsible for most cancers of the breast, pancreas, lung and colon.
Adenocarcinoma
Medications for CVD
An antidiabetic, sodium glucose co-transporter 2 (SGLT2) inhibitor that improves the outcome of patients with CVD and heart failure irrespectively of diabetes status.
- Aspirin
- Atorvastatin
- Empaglifozin
- Glyceryl Trinitrate
- Nifedipine
Empaglifozin
Medications for CVD
A member of the dihydropyridine family of L type voltage-gated calcium channel blockers which, by preventing calcium influx, lead to smooth muscle relaxation.
- Aspirin
- Atorvastatin
- Empaglifozin
- Glyceryl Trinitrate
- Nifedipine
Nifedipine
Medications for CVD
Acts through Nitric Oxide to activate guanylyl cyclase and increase intracellular cyclic guanosine monophosphate (cGMP) activity, which in turn causes relaxation of smooth muscle.
- Aspirin
- Atorvastatin
- Empaglifozin
- Glyceryl Trinitrate
- Nifedipine
Glyceryl Trinitrate
Medications for CVD
Inhibits HMG-CoA reductase, the rate-limiting enzyme of the cholesterol biosynthetic pathway.
- Aspirin
- Atorvastatin
- Empaglifozin
- Glyceryl Trinitrate
- Nifedipine
Atorvastatin