Module 1 Flashcards
What are the two mechanisms of regulation
Auto Regulation (intrinsic)
Extrinsic regulation
What’s auto regulation
Automatic response to an environmental change to a cell tissue or organ
What’s extrinsic regulation
Responses controlled by nervous and endocrine systems
What do the receptor, control centre and effector do (homeostasis)
Receptor - receives stimulus
Control centre - processes the signal and sends instructions
Effector - carries out instructions
What is negative feedback
Where the response of the effector lessens the effect of the stimulus
How does negative feedback control body temp
Receptors in skin and hypothalamus detect change, informs thermoregulatory centre in brain (control centre) which causes sweat glands to increase secretion and blood vessels to dilate (effector)
What is positive feedback
The response of the effector increases the change of the stimulus (used to speed up processes)
Example of positive feedback
Blood clotting
What is dynamic equilibrium
Body is continually adapting to maintain homeostasis
Functions of the respiratory system
Delivers air to alveoli, provides oxygen to bloodstream, removes CO2 from blood, produces sound for communicaton
What does superficial anatomy mean
Anatomy on or near the surfaces
Anatomical position?
Hands at sides, palms forward
Supine define
Lying down face up
Prone define
Lying down face down
What does cranial mean
Towards the skull
What does caudal mean
Towards the base
What does anterior / ventral Mean
Front
What does posterior / dorsal mean
To the back
What does lateral mean
Anything away from the midline of the person
What does medial mean
Towards the middle
What does distal mean
Away from the centre of the body I.e the finger tips are distal to the shoulder
What does proximal mean
Towards the centre of the body
Plane define
A three dimensional axis
Section define
A slice parallel to a plane
What does frontal plane
Separation of the body where the back and front is separated
What does saggital plane mean
Separation where right and left side are seperated
What does transverse plane mean
Top and bottom are separated
List the two main sections of cavities in the ventral body cavity
Thoracic cavity and abdominopelvic cavity
What two cavities make up the thoracic cavity
The pleural cavity and the pericardial cavity
What three sections make up the abdominopelvic cavity
Peritoneal cavity, abdominal cavity, pelvic cavity
What separates the thoracic and abdominopelvic cavity
Diaphragm
What’s the function of body cavities
Protect organs, permit changes in size and shape of organs
What is between the right and left pleural cavities and what does it contain
The mediastinum, contains the trachea, esophagus, and major vessels and the pericardial cavity
What does the pericardial cavity surround
The heart
What do the left and right pleural cavities surround
Left and right lung
Where does the peritoneal cavity extend to
Extends throughout abdominal cavity and into superior portion of pelvic cavity
Superior define
Top
Inferior define
Bottom
What does the abdominal cavity contain
Many digestive glands and organs
What does the pelvic cavity contain
Urinary bladder, reproductive organs, last portion of digestive tract
How many abdominopelvic regions are there
Nine
What are the side regions from top to bottom (has two of each, left and right) of the abdominopelvic region
Hypochondriac region, lumbar region, inguinal region