Anatomy & Phisiology 1 Flashcards
Anatomy
The study of the shape, construction, and location of a body part
Physiology
The study of how a body part works and how it interacts with other body parts
2 parts of Anatomy and Physiology
Macroscopic
Microscopic
11 General Body Systems
- Integumentary
- Skeletal
- Muscular
- Cardiovascular
- Lymphatic
- Respiratory
- Digestive
- Nervous
- Endocrine
- Urinary
- Reproductive
Anatomical Planes
Helps divide the body into sections to make it easier for the doctor to find where a problem is
Median Plane
Equal left and right side
Vertical plane
Sagittal Plane
Vertical Plane
Divides body into unequal left and right sides
Transverse Plane
Divides the body into a tail end and head end
Dorsal Plane
Divides body into a ventral side and dorsal side
Horizontal plane
Ventral Plane
Toward the abdomen
Bottom of a surface
Dorsal Plane
Towards the spine
Top surface of something
Cranial
Towards the head
Caudal
Towards the tail
Superior
Above
Inferior
Below
Rostral
Towards the nose
Medial
Toward the median plane
Lateral
Away from the median plane
Proximal
Close to the point of origin of a body part
Distal
Away from the point of origin of a body part
Anterior
Front of
Posterior
Back or behind
Deep
Close to the center of the body
Superficial
Far away from the center of the body- surface
Internal
Within
External
Outside
Carpus
Front feet
Tarsus
Back feet
Palmer
Bottom of front feet or carpus
Plantar
Bottom of back feet or tarsus
Barrel
Chest and stomach
Flank
In the front of the pelvis or hip area
Brisket
Front of chest, between front legs
Poll
On the head between the ears
Muzzle
Nose and mouth area
Withers
Base of mane, above shoulders
Hock
Ankle region, back legs
Stifle
Knee equivalent
Elbow
Hinge joint on front legs
Stop
Bridge of nose, groove on nose
What is a Body Cavity?
A compartment contained by a membrane, usually containing organs
What is the Serous Membrane?
Double-layer membrane, uses and makes fluid
Visceral Layer
Serous membrane
Closest to underlying organ
Parietal
Serous membrane
Outside of visceral membrane
Divisions of the Dorsal Cavity
Cranial Cavity
Vertebral Cavity
Divisions of Ventral Cavity
Thoracic Cavity
Abdominopelvic Cavity
Thoracic Cavity
Divisions
- Mediastinal Cavity: heart, esophagus
- Pericardial Cavity: heart, trachea
- Pleural Cavity: lungs, chest
Abdominopelvic Cavity (Divisions)
- abdominal cavity: stomach, liver, intestines
- pelvic cavity: kidney, reproductive, ureters, bladder
Intercellular
Between cells
Intracellular
Inside the cell
Extracellular
Outside the cell
Cell membrane
Gatekeeper of the cell
Controls movement of things going in and out of the cell
What 3 things is the Phospholipid Bilayer made of?
- Phospholipid
- Cholesterol
- Glycolipid
Phospholipid Bilayer
The lipid layer is amphipathic
Hydrophilic Head: polar
Hydrophobic Tail: non-polar
What are the structures of the Integral Protein?
Channels: passage through the cell membrane
Transporter: bonding quality to move something in or out of the cell by changing the shape of the molecule
What are Peripheral Proteins?
Binding proteins around or connected to other proteins
Intracellular Protein
Produces enzyme that changes chemical composition of the cell wall to move something out of the cell
Extracellular Protein
Produces and enzyme that changes the shape of part of the cell membrane
The Glycocalyx consists of what?
Glycoprotein-polysaccharide covering that surrounds the cell membrane
Contains:
Cell Adhesion Molecules (CAM)
Membrane Receptor Molecules (MRM)
Glycocalyx Permits 3 Actions
- Intercellular Recognition
- Recognizes specific antibodies surround the cell
- Recognition of various bacteria surround the cell
4 Types of Selective Permeability
- Lipid Solubility
- Size
- Charge
- Integral and Peripheral Proteins
Flagella
Large projection of the cell wall that helps the cell move
Cilia
Tiny hair like structures, often proteins, on the cell that helps make surrounding fluid move
Cytoplasm
Mostly water, gives cell it’s structure
Cytosol
Water in the cytoplasm
Cytoskeleton
Jelly-like structure of the cytoplasm
Nucleolus
Contains genetic material (chromatin), proteins, and DNA and RNA
Nuclear Components
Nuclear envelope
Nucleoplasm
Nucleus
3 Functions of the Nucleus
- Maintains genetic material
- Controls cell protein synthesis
- Contains blueprint for over 2000 proteins needed for cell survival
Golgi Apparatus
located near the nucleus and receives and packages proteins from nucleus
Golgi Bodies
small sections of the Golgi Apparatus that have captured proteins and split off from the organelle
Polysaccharides
synthesized by Golgi Apparatus’ glycocalyx cell wall
Rough Endoplasmic Reticulum
extension of nuclear envelope and contains many ribosomes or proteins
Smooth Endoplasmic Reticulum
no ribosomes or proteins, helps the cell break down toxins
The 2 types of Ribosomes are what?
Attached: synthesize proteins used outside cell
Free-Floating: breaks down things the body doesn’t need
Mitochondria
makes energy that the cell needs
Lysosomes
vesicle or vacuole, garbage can of the cell
What 3 things do Proteasomes do?
- Break down damaged proteins
- Breaks down excess proteins
- Breaks down unwanted or damaged genetic material
What is the function of Peroxisomes?
vacuole, breaks down toxic substances in the cell
Oxidase
enzyme that removes a H+ atom from a toxic molecule
Catalase
enzyme that breaks down the hydrogen peroxide that the oxidase formed
Concentration Gradient
higher concentration of molecules interacting with a nearby lower concentration of molecules and vise versa
Passive Process
no energy being used by the cell to move things in and out of the cell
Simple Diffusion
movement of molecules from a higher concentration to a lower concentration
Facilitated Diffusion
binding of a protein on the cell membrane by an outside molecule to a transporter protein located within the cell membrane
Osmosis
water molecules moving from a high molecular concentration to an area of low molecular concentration as influenced by solutes surrounding the cell
Active Process
cell must use energy to make something happen
Active Transport
cell used energy to move molecules through the cell membrane, splitting of ATP
What are the 2 types of Endocytosis?
phagocytosis
pinocytosis
Phagocytosis
the cell uses energy to wrap around something and bring it in the cell
Pinocytosis
the cell uses energy to form a vesicle in the cell membrane trapping things within the cytoplasm
Exocytosis
formation of a vesicle with use of energy and moves things out of the cell
Isotonic
molecular concentration is equal on the outside of the cell and inside the cell
Hypertonic
molecular concentration on the outside the cell is lower than the molecular concentration on the outside of the cell
Hypotonic
molecular concentration on the outside of the cell is greater than the molecular concentration on the inside of the cell
3 functions of the Integumentary System
- Temperature Regulation
- Protection
- Sensory Perception
Epidermis has 3 layers
- Epidermis
- Dermis
- Hypodermis
Epidermis Characteristics
really thin superficial avascular Keratinized 5 layers
5 Layers of the Epidermis
- Stratum Corneum
- Stratum Lucidum
- Stratus Granulosum
- Stratus Spinosum
- Stratus Basale
Stratum Corneum
1st layer of the epidermis
thick, very loose, flakes off
Stratum Lucidum
2nd layer of the epidermis
really though skin, bottom of feet and palms, paw pads
Stratum Granulosum
3rd layer of the epidermis
heavier amount of keratin, flexible and moist, waterproofing
Stratum Spinosum
4th layer of the epidermis
spiky, helps cells stay anchored
Stratum Basale
5th layer of the epidermis
rapid division, when the skin is damaged it repairs or replaces the damaged cells
Keratinocytes
keratin cells
Sloughing
when the epidermis flakes off skin cells
Melanocytes
pigment cells
Langerhans Cells
moving cells from the blood through the layers of the skin
migrating cells
Merkel Cells
tiny nerve endings usually around the root of a hair, involved in the sense of touch
Tactile Hairs
microscopic hairs, touch
Dermis
Contains three major structures, has connective tissue, and functions as a provider of substance to other structures
4 Major Structures of the Dermis
- Nerve receptors or corpuscles
- Vasculature (blood supply)
- Gland tissue
- Hair Roots
4 Corpuscles
- Meissner’s
- Pacinian’s
- Kraus’s
- Ruffini’s
Meissner’s Corpuscle
Nerve endings that perceive touch
Pacinian’s Corpuscle
Deeper in the dermis and perceives sensation of pressure
Kraus’s Corpuscle
Perceives cold sensation, superficial
Ruffini’s Corpuscle
Perceives heat, superficial
Vasculature
Blood supply through arteries and veins
Exocrine Glands
Excretes something that reaches the surface
Sebaceous Glands
Oil glands, near root of hair
Sudoriferous Gland
Sweat gland
Eccrine and Apocrine
Eccrine Glands
Small, abundant throughout body
Sweat Gland
Apocrine Gland
Bigger, fewer in body
Sweat glands
Hair structures
Hair shaft Root Bulb Pore Follicle Root hair plexus Arrector pili muscle
Follicle
Tunnel around root of hair that extends down to dermis
Root hair plexus
Small group of nerves right below the bulb of the hair
Arrector Pili Muscle
Small muscle that is attached to the root of the hair, makes the hair stand up
Telegen Effluvium
Massive hair loss after birthing
The Hypodermis consists of what 2 tissues?
Subdermis/subcutaneum
Adipose Tissue
Aereolar Tissue
Tail Glands
Glands that secrete an odorless gas/oil, for animal communication
Anal Sacs
Located at 5&7 o’clock of the anus
Osseo
Bone tissue
Osteo
Bone as a whole
2 divisions of a skeleton
- Axial Skeleton
2. Appendicular Skeleton
What does the Axial Skeleton consist of?
Head/skull, vertebrae, ribs
What does the Appendicular Skeleton consists of?
Arms, legs, shoulders, hips, collarbone, legs, hands, feet
5 Functions of the Skeletal System
- Support
- Protection
- Leverage
- Storage
- Blood Cell Formation
2 Types of Bone
- Cancellous Bone
2. Compact Bone
Cancellous Bone
spongy bone, porous, stores marrow
flat bones, ribs, center of pelvis, center of long bones
Trabeculae
bone around the holes/pores of the spongy bones in order to make the bones light
Compact Bone
cortex
Structure of Compact Bone
Lamellae:
- Concentric
- Interstitial
- Circumferential (inner and outer)
Concentric Lamellae
rings of compact bone within the bone
Interstitial Lamellae
compact bone between the concentric lamellae
Circumferential Lamellae
inner: toward center of the bone that wraps around the medullary cavity
outer: wraps around entire bone
Haversion System
one single unit of concentric lamellae, aka “osteon”
Haversion Canal
center of the haversion system or osteon, allows blood vessels to run though
Medullary Cavity
hole/cavity in the center of a bone
Lacuna
little pits in the bone that are filled with fluid and houses a little bone cell on the concentric lamellae
Canaliculi
passages for fluid to run through, connected to the lacuna
Bone Cells
- Osteoblast
- Osteocyte
- Osteoclast
Osteoblast
an immature bone cell
Osteocyte
a mature bone cell
Osteoclast
breaks down bone when the body needs calcium
Volkmann’s Canals
horizontal holes in the bone, have blood vessels going through them
Nutrient Foramen
hole in bone that provides space for a nutrient artery
Nutrient Artery
delivers blood to bone
Periosteum
thin layer of bone that surrounds the entire outside of the bone
Perichondrium
a layer of cartilage that wraps around the bone, eventually it turns into bone - periosteum
Sharpey’s Fibers
fibers that anchor the periosteum to the underlying bone, outer circumferential lamellae