Introduction to the body Flashcards
What is the definition of anatomy?
It is the study of the structure of the body and the physical relationship between its parts.
What is the definition of physiology?
Study of how the systems work and the way they maintain the health of an individual.
What is the definition of pathology?
Study of abnormalities and considers how they affect body functions causing illnesses.
What is the name of the 11 body systems?
- Cardiovascular
- Digestive
- Endocrine
- Exocrine
- Lymphatic
- Skeletal
- Muscular
- Nervous
- Renal
- Reproductive
- Respiratory
What is the definition of endocrine?
This is a gland that secretes chemical messengers called hormones directly into the bloodstream or tissue.
What is the definition of exocrine?
This is a gland that’s secretes products like enzymes into ducts opening to an epithelium rather than straight into the blood stream.
Give an example of an organ that is both endocrine and exocrine.
And explain. (3)
The pancreas.
Endocrine - secretes insulin and glucagon to regulate blood glucose levels in the body.
Exocrine - secretes enzymes to breakdown proteins, carbohydrates, lipids and nucleic acids produced from food.
Why do we need medical terms?
4
- To describe the location of injury.
- To make it easier to understand.
- Decipher medical notes and conditions quicker.
- Professional and ensures a better handover.
What is the standard anatomical position? (5)
Person standing straight. Feet facing forwards. Arms to the side. Palms of the hands facing interior (forwards). Fingers pointing straight down.
What is the purpose of the standard anatomical position?
Used to describe locations easier and make position references.
What are body planes?
Body planes include sagittal, coronal and transverse planes which are all positioned 90 degrees to each other.
What is the sagittal plane?
It divides the body or organ into right and left hand sides.
What is the coronal/frontal plane?
It divides the body or an organ into anterior and posterior portions.
What is the transverse/horizontal/cross-sectional plane?
It divides the body or organ into superior or inferior portions.
Name the four body cavities.
- Cranial
- Thoracic
- Abdominal
- Pelvic
Why is knowledge on body cavities important?
Because these are potential spaces for blood or air to enter.
What does superior and inferior mean in terms of direction?
Give an example.
Superior - above
Inferior - below
e.g. The elbow is superior to the hand.
What does anterior and posterior mean in terms of direction?
Anterior - towards the front (chest side) of the body.
Posterior - towards the back.
What does proximal and distal mean in terms of direction?
Give an example.
Proximal - closest to the point of origin.
Distal - farthest away.
e.g. Tibia - proximal end would be the end close to the knee (the knee itself). Distal end would be close to the foot (further away).
What does medial and lateral mean?
Medial - towards the midline of the body.
Lateral - means away from the midline.
What does superficial and deep mean?
Superficial - towards the body surface.
Deep - Farthest from the body surface.
What does supine, prone and lateral mean?
Supine - laying on the back.
Prone - laying on the front.
Lateral - laying sideways.
What does abduction mean?
Movement of the body part away from the body.
What does adduction mean?
Movement of the body part towards the body.
What does flexion mean?
Decreases angle between two body parts.
What does extension mean?
Increasing angle between two body parts.
What does elevation mean?
Movement in superior direction.
What does depression mean?
Movement in inferior direction.
What does supination mean?
Lying flat on the back.
What does dorsiflexion mean?
Ankles/feet and hands up.
What does inversion mean?
Movement towards median plane.
What does eversion mean?
Movement of away from median plane. (Lateral direction).
What does reposition mean?
Away.
What is the 1 and 3 region of the abdomen called?
Hypochondriac region.
What is in the right hypochondriac region?
4
Liver
Gallbladder
Right kidney
Small intestines
What is the region 2 on the abdomen called?
Epigastric regions.
Where is the epigastric region (2) located?
It is positioned superior to the umbilical region.
What is within the epigastric region? (6)
- Most of the pancreas
- Part of the stomach
- Liver
- Inferior vena cava
- Abdomen aorta
- Duodenum.
What is the region 4 and 6 in the abdomen called?
Lumbar region.
What is within the right lumbar region? (2)
Liver
Gallbladder
Ascending colon
What is the region 5 in the abdomen called?
Umbilical region.
What is within the umbilical region?
Sections of large and small intestines.
Small intestine - duodenum, jejunum and ileum
Transverse colon
Bottom portions of left and right kidney
Inferior vena cava
Abdomen aorta.
What is the region 7 and 9 called in the abdomen?
Iliac region.
What is within the right iliac fossa region?
Appendix
Ascending colon
Cecum (pouch at beginning of large intestine)
Bladder
What is the 8 region called in the abdomen?
Hypogastric or suprapubic region.
What is within the hypogastric region?
- Sigmoid colon
- Urinary bladder
- Ureters
- Uterus
- Ovaries
- Portions is small intestines
What is body planes?
Body planes include sagittal, coronal/frontal and transverse planes which are all at 90 degree angles to one another.
What is the sagittal plane?
Divides the body or organ into right and left hand sides. It moves from the centre of the head downwards.
What is the coronal/frontal plane?
It divides the body or organ into anterior or posterior positions. Anterior is the front and posterior is the back.
What is the transverse/horizontal/cross-sectional plane?
It divides the body or organ into a superior or inferior portions. Superior means higher up and inferior means lower down.
What are organs composed of?
Tissue
What are tissues composed of?
Cells
What are cells composed of?
Molecules
What are molecules composed of?
Atoms
What are the four types of tissues?
Epithelial
Connective
Muscle
Nervous
What is homeostasis?
The maintenance of internal conditions within a narrow range despite external changes (dynamic equilibrium)
What is negative feedback?
A process that brings about a reversal in any change in conditions
What is positive feedback?
A process that increases any change detected by receptors. Tends to be harmful and does not lead to homeostasis.
What are the three basic components of a control system ?
Detector, control centre and effector
What does the lymphatic system consist of?
Lymph vessels
Tissue fluid
Lymph nodes
What do lymph vessels begin as?
Blind ended tubes in the interstitial spaces between the blood capillaries and tissue cells
What is the left hypochondriac region ?
Spleen
Colon
Left kidney
Pancreas
What is within the left lumbar region?
Descending colon
Left kidney
What is within the left iliac fossa region?
Descending colon
Sigmoid colon
Bladder
Uterus in women