lab exam 2 Flashcards
what is the function of circulatory system?
transport oxygen and nutrients to the tissues of the body and carbon dioxide and nitrogenous wastes from the tissues
what is a 4 chambered heart?
completely seperate right and left atria and ventricles
what are vessels?
veins and arteries, carry blood to and from the heart
what are capillary beds?
very small vessels across the walls of which gas and nutrient exchange takes place in the tissues
what is an artery?
carries blood away from the heart, elastic and muscular
what is a vein?
carries blood towards heart, thin and not as muscular
what are valves?
prevent backflow of blood
what are capillaries/
the smallest blood vessels, beds invade tissues
what are lymphatic vessels?
some tissue fluid and cells return to large veins in a separate set of vessels
what are lymph nodes?
lie along lymphatic vessels, sites of production of some white blood cells
what is the left atria?
receives blood from lungs
what is the right atria?
receives blood from body
what is the right ventricle?
pump blood to the lungs
what is the left ventricle?
pump blood to body
which ventricle is more muscular?
left bc it has to pump to body
what is the precava and postcava?
the vein where the blood enters the heart, forward and behind body
what valve does blood pass through from the right atria to right ventricle?
tricuspid valve
what is the pulmonary trunk?
thick artery that leads from right ventricle to pulmonary arteries in lungs
what valve does blood pass through from the right ventricle to the pulmonary trunk?
pulmonary semilunar valve
what vein does blood pass through to get to the left atrium?
pulmonary veins
what valve does blood pass through from the left atrium to the left ventricle?
bicuspid valve
what valve does blood pass through from the left ventricle to aortic arch?
aortic semilunar aorta
what is the major artery that supplies blood to all organs?
dorsal aorta
what are the coronary aerties?
supply oxygen-rich blood to the entire heart muscle
what is the ductus arteriosus?
connects pulmonary trunk to aorta, only in fetuses, lungs dont work yet
what is the foraman ovale?
small hole that passes across from the right ventricle to left atrium
what is the allantoic duct?
where nitrogenous wastes are excreted in fetuses
what are adrenal glands?
produce hormones, located on top of kidneys, dark blob on stomach
what is the adrenal medulla?
inner middle of kidney, secretes adrenaline
what is the adrenal cortex?
secretes steroid hormones, inner layer of kidney
what is the ureter?
tube from kidneys to bladder
what is the bladder?
holds pee, web looking thing between umbilical veins
what is the scrotum?
external pouch for testes
what is the spermatic cord?
supports the testes
what is the vas deferans?
transports mature sperm to the urethra
what are the testes?
the glands where sperm and testosterone are produced
what is the gubernaculum?
aids in the descent of gonads
what is the epididymis?
stores sperm and transports it from the testes
what is the function of the urogenitial opening?
bodily waste and reproductive fluids are expelled to the environment outside of the body cavity
what is the function of penile retractor muscles?
pulls the penis back into its sheath after and erection
what is the function of seminal vesicles?
holds the seminal fluid that mixes with sperm to form semen
what is the function of the prostate gland?
secrete prostate fluid, one of the components of semen
what are cowper’s glands?
secretes fluid that helps semen pass through semen and protects it from acidic urine
what are ovaries?
produce eggs
what are uterine horns?
points where the uterus and the fallopian tubes meet
what are tears?
secretions lube and clean the eyeball surface
what are extrinsic ocular muscles?
control complex movements of the eyeball
what is the optic nerve?
transfers visual information to brain
what is the sclera?
Gives the eye shape and helps protect delicate inner parts
what is the cornea?
protects eye and focuses light
what is the iris?
controlling the diameter and size of the pupil and thus the amount of light reaching the retina
what is the ciliary body?
releases a aqueous humor in the eye
what is chorotoid?
absorbs excess light
what is the retina?
consists of rods of cones
what is the tapetum lucidum?
reflects incoming light back to retina, night vision
what is the vitreous body?
keeps retina firmly again choroid
the central nervous system consists of
brain and spinal cord
the 3 brain regions are?
forebrain, midbrain, and hindbrain
what is the cerebrum?
largest part of the brain, divided into 2 halves
what is the right brain?
controls imagination, spatial relationships, art shit
what is the left brain?
logic language, analysis, quantitative reasoning
what is the cerebellum?
functions below the level of consciousness, coordinating body movements, equilibrium, and position of the body
what is the medulla oblongata?
merges with spinal cord, contains most of cranial nerves and centers for involuntary function
what is the frontal lobe?
controls voluntary movements, language, cognition
what is the occipital lobe?
processing visual information
what is the temporal lobe?
processing sound and smell
what is the parietal lobe?
touch and balance
what is the olfactory bulb?
located in the forebrain of vertebrates that receives neural input about odours detected by cells in the nasal cavity
what is the pons?
control of breathing, communication between different parts of the brain, and sensations such as hearing, taste, and balance
what is the optic chiasma?
signals from some of the retinal cells of each eye are delivered via the sensory optic nerves to the cerebral hemisphere on the OPPOSITE side of the brain
what is the pineal gland?
small endocrine gland in the vertebrate brain
what is the thalamus?
located between the cerebral cortex and the midbrain. It works to correlate several important processes, including consciousness, sleep, and sensory interpretation
what is the epithalamus?
connect the limbic system to other parts of the brain
what is the hypothalamus?
link the nervous system to the endocrine system via the pituitary gland
what is the function of the nictitaing membrane?
transparent third eyelid that moistens eye and protects
what are the three differences between pigs and humans besides appearance?
- bicournate uterus
- urogenital opening
- lack of appendix in pigs
how does the fetus get oxygenated blood/breathe/eliminate waste?
umbilical cord
what are ungulates?
animals with hooves
what is the hard palate?
important for feeding and speech
what is the nasopharynx?
connects nose to mouth
what is the parotid gland?
largest salivary gland
what is the mandibular gland?
salivary gland, under massester muscle
what is the glottis?
opening to larynx and trachea
what is the epiglottis?
prevents food going into airway
what is the thymus gland?
production of T lymphocytes
what is the thyroid gland?
secretes thyroxine, endocrine gland
what is the trachea?
tube that leads from the glottis to the bronchi and lungs
nostrils->pharynx->larynx->trachea->bronchi->bronchioles->alveoli
ya
what is the diaphragm?
separates thoracic and abdominal area, used for inhalator
what does the liver do?
secretes bile which aids the digestion of fats
what is in the stomach?
HCl-breaks down pepsinogen into pepsin
pepsin- breaks down proteins into amino acids
what is the spleen?
produce red blood cells in fetus and stores and eliminates them in adults
what is the rugae?
stomach folds
what is the cardiac sphincter?
valve to prevent stomach contents from going up (heartburn if it does go up)
what are villi?
microscopic projections thst increase surface in intestines
what is the pancreas?
aid in digestion and regulate blood sugar
what is the gall bladder?
stores bile
what is the large intestine?
absorb water from food
what is the duodenum?
receives chyme, digestive enzymes, and bile.
what is the jejunum?
products of digestion are absorbed into bloodstream
what is the ileum?
absorbs vitaminB12 and bile acids
what is the caecum?
a pouch connected to the junction of the small and large intestines
what is the spiral colon?
similar to ascending colon in humans, absorbs water and nutrients
what is the crop?
used for holding quantities of food before its passed to the intestine
what is the gizzard?
helps with mechnical breakdown of hard-to-digest materials
what are ruminants?
throws up food to rechew, uses cellulase to break down cellulose
what is coprophagy?
partially digested food consumed again
what is amylase?
digestive enzyme found in saliva
what is the stomach?
holds food and regulates entry of chyme for intestine
What is trypsin and sodium bicarbonate?
secreted by pancreas into duodenum to neutralize chyme
what is bile?
neutralize chyme
what is a lipase?
emulsify lipids
what are gills?
fish uses to extract oxygen
what the the trachae?
what insects use to get oxygen
what is an open circulatory system?
blood bathes the organs in the body cavity rather than using a network of vessels
what is spawning?
when females and males release their gonads externally at the same time
what are oviparous?
egg laying species
what are viviparous?
live birth
what is spermatozoa?
male gamete
what are intromittant?
an external organ of a male organism that is specialized to deliver sperm during copulation
what are gonopods?
modified structures used to transfer sperm to female
what are hemipenes?
modification of the walls of the cloaca that can engorge with blood
what are claspers?
modified appendages of the pelvic fins to deliver sperm
what is a pseudocoel?
body cavity in worms
what is the typlosole?
facilitates digestion and absorption by increasing the SA in earthworms
what is the septa?
dividing walls between segments
what is the dorsal blood vessel?
fluids are collected here and reenter the aortic arches
what are the adductor muscles for?
clams to open and close their shells
what is the mantle?
to enclose and protect the internal organs in calms
what is the pericardial sac?
tissue that covers the heart to protect it
what is the incurrent siphon?
brings in food-laden oxygenated water
what is the excurrent siphon?
sends waste and deoxygenated water out
what is a cardiac stomach?
grinds food up
what are gonopods?
First pair of swimmerettes, small and used for holding eggs in females, but large in males and used for sperm transfer
what are swimmerettes?
Appendages used for swimming locootion and reproduction
what is the ventral nerve cord?
Central nervous system
what is the pharynx?
the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
what is the larynx?
the hollow muscular organ forming an air passage to the lungs
what are tube feet?
in locomotion, feeding, and respiration
what is the madreporite?
filter water
what is the pyloric caecum?
digestive gland
what are ampullae?
store the water that enters the vascular system and send it to the minuscule tube feet
what is the ring canal?
connects the stone canal and radial canal and carries water from the stone canal to the radial canal in the water vascular system
what is the stone canal?
connecting the madreporite with a ring canal
what are goblet cells? trachea
secrete mucus in order to protect the mucous membranes where they are found