Anatomy and Physiology Flashcards
What is the meaning of the prefix a/an?
Lack of
What is the meaning of the prefix dys?
Difficult/defective
What is the meaning of the prefix endo?
Within
What is the meaning of the prefix ex?
out/away from
What is the meaning of the prefix haem/haemo?
Blood
What is the meaning of the prefix hydro?
Water
What is the meaning of the prefix hyper?
Above/more than
What is the meaning of the prefix hypo?
Below/less than
What is the meaning of the prefix inter?
Between
What is the meaning of the prefix intra?
Within
What is the meaning of the prefix myo?
Muscle
What is the meaning of the prefix peri?
Around
What is the meaning of the prefix poly?
Many
What is the meaning of the prefix pyo?
Pus
What is the meaning of the prefix sub?
Beneath
What is the meaning of the suffix aemia?
Blood
What is the meaning of the suffix ectomy?
Cut out
What is the meaning of the suffix graphy?
Recording
What is the meaning of the suffix itis?
Inflammation
What is the meaning of the suffix logy?
The study of
What is the meaning of the suffix oma?
A swelling
What is the meaning of the suffix pathy?
Any disease
What is the meaning of the suffix phagia?
Eating
What is the meaning of the suffix pnoea?
Breathing
What is the meaning of alopecia?
Loss of hair
What is the meaning of anorexia?
Loss of appetite
What is the meaning of apnoea?
Ceased breathing
What is the meaning of bradycardia?
Abnormally low heart rate
What is the meaning of cardiac?
Relating to the heart
What is the meaning of cyanosis?
Bluish colour of mucous membranes due to lack of oxygen?
What is the meaning of dysphagia?
Difficulty eating
What is the meaning of dyspnoea?
Difficulty breathing
What is the meaning of emesis?
Vomiting
What is the meaning of hypothermia?
Abnormally low body temperature
What is the meaning of pyrexia?
Fever
What is the meaning of tachycardia?
Rapid heart rate
What is the meaning of tachypnoea?
Rapid, shallow breathing
What is the meaning of tenesmus?
Painful, unproductive straining
Which part of the nerve cell transmits impulses away from the cell body?
Axon
What do Schwann cells create?
Myelin sheath
What are the spaces called where oxygen and nutrients are supplied to a neuron?
Node of Ranvier
What is the purpose of myelin?
Insulated the neuron to increase the speed of the impulse
What is a neuromuscular junction?
Where a neuron meets a muscle and causes contraction
What is the name for the junction between two neurons?
Synapse
What are the different neurotransmitter chemicals that aid in the transmission of an impulse across a synaptic cleft?
Acetylcholine, adrenaline, serotonin, dopamine
Are dendrons or dendrites larger in diameter on the nerve cell?
Dendrons
What is myelin composed of?
Lipoproteins
What is the central nervous system composed of?
Brain and spinal cord
What is the peripheral nervous system composed of?
Spinal nerves and cranial nerves
What are the names of the cranial nerves and their types?
Olfactory (Sensory)
Optic (Sensory)
Oculomotor (Motor)
Trochlear (Motor)
Trigeminal (Both)
Abducens (Motor)
Facial (Motor)
Vestibulocochlear (Sensory)
Glossopharyngeal (Both)
Vagus (Both)
Accessory (Motor)
Hypoglossal (Motor)
How many pairs of cranial nerves are there?
12
What is the function of the Olfactory (I) nerve?
(SENSORY) Carries sense of smell from olfactory bulbs to the brain
What is the function of the Optic (II) nerve?
(SENSORY) Carries information about sight from eyes to the brain. Involved in the pupillary light reflex
How do both sides of the brain receive information from both eyes, via the optic nerve?
Some nerve fibres from each eye cross over via the optic chiasma to the other side of the brain
What is the function of the Oculomotor (III) nerve?
(MOTOR) Supplies extrinsic muscles of the eye to control eye movement, pupil constriction and eye focus
What is the function of the Trochlear (IV) nerve?
(MOTOR) Supplies extrinsic muscles of the eye to control eye movement
What is the function of the Trigeminal (V) nerve?
(BOTH) Sensory fibred carries impulses from skin around they eyes and face
Motor fibres supply the muscles of mastication (mainly temporal and masseter)
What is the function of the Abducens (VI) nerve?
(MOTOR) Supplies extrinsic muscles of the eye to control eye movement
What is the function of the Facial (VII) nerve?
(MOTOR) Supplies muscles of facial expression; lips, ears, skin around eyes
What is the function of the Vestibulocochlear (VIII) nerve?
(SENSORY) Vestibular branch carried information about balance
Cochlear branch carries information about hearing
What is the function of the Glossopharyngeal (IX) nerve?
(BOTH) Sensory fibres carry sensation of taste from taste buds to the brain
Motor fibres supply muscles of the pharynx for swallowing and salivation
What is the function of the Vagus (X) nerve?
(BOTH) Sensory fibres from the pharynx and larynx
Motor fibres to muscles of the larynx, parasympathetic motor fibres supply visceral organs and abdominal organs
What is the function of the Accessory (XI) nerve?
(MOTOR) Supplies muscles of the neck and shoulders, allowing head and shoulder movements, vocalisation and swallowing
What is the function of the Hypoglossal (XII) nerve?
(MOTOR) Supplies muscles of the tongue, allowing tongue movements, swallowing and vocalisation
What is the longest cranial nerve?
Vagus (X) nerve
Where does the spinal cord begin and end?
From the medulla oblongata to the lumbar region, terminating in the cauda equina
What is the spinal cord comprised of?
Nerve fibres; outer white matter and inner grey matter
What surrounds the spinal cord?
Meninges and cerebrospinal fluid
What are the meninges?
3 protective layers around the brain and spinal cord; Dura mater, Arachnoid mater and Pia mater
What is between each meninges layer?
Subdural space between the Dura mater and Arachnoid mater. Subarachnoid space between the Arachnoid mater and Pia mater
Which meninges layer is closest to the brain and spinal cord?
Pia mater
What is grey matter composed of?
Cell bodies of neurons and non-myelinated nerve fibres
What is white matter composed of?
Myelinated nerve fibres
How many pairs of spinal nerves are there?
36
What is the function of the endocrine system and which other system does it work with?
Maintains regulation of the body, works with nervous system to maintain homeostasis
Which is faster in response, nervous system or endocrine system?
Nervous system
Endocrine glands are _ . They secrete _ .
Endocrine glands are ductless and they secrete hormones
What is meant by the word ‘target organ’?
Each hormone has a target organ. There are specific receptor sites on organs that only allow specific hormone to bind. They can’t work on any organs they are not meant to.
How are hormone transported to their target organs?
Through the blood stream
When does a hormone start and finish being secreted and what is this known as?
Hormones are only secreted after being activated by specific stimuli. The hormone readjusts levels in the body, once an equalibrium is reached the hormone stops. This is known as negative feedback.
Which endocrine gland also has exocrine functions?
The pancreas is a mixed gland.
Which hormones are produced by tissues within organs and not secreted by endocrine glands?
Gastrin, secretin, chorionic gonadotrophin, erythropoietin
Where is gastrin produced and what is its purpose?
Produced in the stomach walls. Causes release of gastric juices to allow digestion once food enters the stomach.
Where is secretin produced and what is its purpose?
Secreted by the small intestine wall. Stimulates production of intestinal and pancreatic juices once food enters the small intestine.
When is chorionic gonadotrophin produced and what is its purpose?
Produced during pregnancy. Helps to maintain the corpus luteum.
Where is erythropoietin produced and and what is its purpose?
Produced in the kidneys when oxygen levels are low. Stimulates production of new red blood cells from the bone marrow.
What is the pituitary gland?
One of the main controlling glands of the body, can be divided into anterior and posterior.
What are the other names for anterior and posterior pituitary gland?
Anterior = Adenohypophysis
Posterior = Neurohypophysis
Which hormones are secreted by the anterior pituitary gland?
Follicle stimulating hormone (FSH)
Adrenocorticotrophic hormone (ACTH)
Thyroid stimulating hormone (TSH)
Lutenising hormone (LH)
Interstitial cell stimulating hormone (ICSH)
Prolactin
Somatotrophin
FATLIPS
What does thyroid stimulating hormone do and what is its target organ?
Target organ = Thyroid gland
Stimulates release of the thyroid hormone. Release of TSH is influenced by the hypothalamus.
What does somatotrophin do and what are its target organs?
Target organs = Bone and instestines
Controls epiphyseal growth of bones. Protein production. Regulation of energy use. Secretion is influenced by the hypothalamus.
What does adrenocorticotrophic hormone do and what is its target organ?
Target organ = Adrenal cortex
Controls release of adrenocortical hormones. Secretion is influenced by the hypothalamus.
What does prolactin do and what is its targen organ?
Target organ = mammary tissue
Stimulates mammary gland development and milk production.
What does follicle stimulating hormone do and what is its target organ?
Target organ = Ovaries
Stimulates follicle development in ovaries. In male, stimulates spermatozoa production. Release is controlled by gonadotrophin releasing hormone in the hypothalamus.
What does lutenising hormone do and what is its target organ?
Target organ = Graafian (ripe) follicles
Stimulates ovulation and maturation of corpus luteum. Release controlled by decreasing production of oestrogen in graafian follicle.
What does intertitial cell stimulating hormone do and what is its target organ?
Target organ = testes
Stimulates testosterone production in interstitial cells in testes. Secretion is controlled by gonadotrophin releasing hormone in the hypothalamus.
Which hormones are secreted by the posterior pituitary gland?
Antidiuretic hormone (ADH)
Oxytoxin
What does antidiuretic hormone do and what is its target organ?
Target organ = Collecting ducts of kidney
Allows collecting ducts to reabsorb water and reduce amount of urine produced. External cellular fluid and plasma concentration controls release.
What does oxytocin do and what are its target organs?
Target organs= Uterus+mammary tissue
Stimulates uterine contaction and milk let down.
What are the thyroid glands?
A pair of glands lying ventrally to the first few tacheal rings.