Formative Flashcards
What is the epididymis and what does it do?
posterior of the testis
sperm inside moves from superior to inferior
sperm comes from seminiferous tubules to here then to the vas deferens
What join together to make the ejaculatory duct?
vas deferens and the duct for the seminal vesicle
What does the spermatic cord include?
testicular artery pampiniform plexus of veins vas deferens nerves lymphatics
What is cut and ligated in male sterilisation?
vas deferens
‘vasectomy’
What drains semen into the prostatic urethra?
ejacuatory duct
What is the ischium?
component of the pelvic outlet
What type of joint is the interosseous membrane?
- fibrous sheet that connects two bones
- fibrous syndesmosis between membrane and bones
What is the approx range of flexion at the shoulder, hip and knee joints?
shoulder = 180 hip = 135 knee = 135
What form of glia produces myelin in the CNS?
oligodendrocyte
What do astrocytes do?
support and maintaining homeostasis in the extracellular environment
What do microglia do?
immune surveillance
What do neutrophils look like?
fine blue granules
3-5 nuclear segments
What do eosinophils look like?
bi-lobed nucleus
red granules
What do monocytes look like?
agranular
non-segmented nucleus
nucleus can be horse-shoe shaped
What do basophils look like?
segmented nucleus
purple black granules
What do mast cells look like?
only found in tissues
purple-black granules
What is an acrosome?
catlike saccular organelle in the anterior half of the head of the sperm that contains several enzymes
When is a foetus called a foetus?
Week 9 to birth
What are the two types of striated cells?
skeletal muscle (many nuclei) cardiac muscle (one nucleus)
When is a baby human called a foetus and when is it called an embryo?
embryo is fertilisation to W8
foetus is W9 to birth
(fertilisation to W3 is conceptus)
What direction is DNA synthesised in?
from 5’ to 3’
nucleotides added to a free 3’ hydroxyl group
What is the rate of reaction of conversion of pyruvate to lactate matched by?
NADH regeneration by glyceraldehyde 3-phosphate dehydrogenase
What effect would arteriolar vasodilation have?
decrease total peripheral vascular resistance
so decreases MAP
What does heat exposure do to muscle tone?
heat decreases muscle tone
What is the anterior hypothalamic centre stimulated by?
warmth
What is the posterior hypothalamic centre stimulated by?
cold
What is Turner’s syndrome?
absence of an X chromosome
What is Pataus syndrome?
extra genetic material form chromosome 13
What is Klinefelter syndrome?
47 XXY
What is Edwards syndrome?
trisomy 18
What is p and q on a chromosome?
p is the short arm
q is the long arm
What is a protein activated in Burkitt’s lymphoma?
c-myc
What is the initial response in the vascular phase of acute inflammation?
dilation of arterioles then capillaries then venules
How does increased intracellular calcium contribute to cell death?
increase mitochondrial permeability
increase levels of endonuclease and phopholipases
How can apoptosis occur?
- internal pathway with mitochondria
- extrinsic pathway with ligand bind to death receptors on cell surface (FAS)
What is granulation tissue made up of?
capillaries (endothelial cells) and myofibroblasts which deposit collagen and smooth muscle cells
How is gastroenteritis food poisoning transferred?
faecal-oral
What type of gram is Clostridia?
gram-positive
What is the best thing about using DNA technology to identify bacteria from its 16s gene sequence?
most cost effective way to find bacterial strains that may otherwise not be identified
What are the most common cell wall antimicrobials?
penicillins
glycopeptides
cephalosporins
What are the most common antibiotics that affect nucleic acids?
metronidazole
ciprofloxacin
What are the antibiotics targeting protein synthesis?
aminoglycosides
tetracyclines
macrolides