What are the anatomical planes of the body?
What are the types of body movements?
What are the cavities of the body?
What are the types of ventral cavity membranes?
What is the structural organization of the body?
What are the abdominal regions?
What are the abdominal quadrants?
What are free nerve endings also known as?
Nociceptors (pain sensors)
What do Merkel discs detect?
Light touch
What do Meissner’s corpuscles sense?
Light touch, movement, low frequency vibration
What is the function of Ruffini corpuscles?
Pressure, heat, skin stretching
What do Pacinian corpuscles detect?
Deep touch and high frequency vibrations
What are the two types of hair follicles?
Vellus (fine hair) and Terminal (thicker/more pigment)
What are the types of exocrine glands?
Sebaceous, sweat, mammary, ceruminous
What is the stratum corneum?
The superficial layer of the epidermis
What is the stratum lucidum?
A clear layer only present in thick skin
What is contained in the stratum granulosum?
Contains granules
Where do keratinocytes grow and mature?
In the stratum spinosum
What is the stratum basale?
The deepest layer of the epidermis where all epidermal cells originate
What does the hypodermis contain?
Subcutaneous fat (adipose tissue) and many blood vessels
What is the function of epidermal ridges?
Increase contact area between dermis and epidermis
What are lines of cleavage?
Larger lines or skin tension lines formed by collagenous fiber bundles
What are the parts of the ear?
Auricle, external acoustic meatus, tympanic membrane
What is the palpebral fissure?
The area between the eyelids
What does the middle ear consist of?
Tympanic cavity, auditory ossicles (malleus, incus, stapes), auditory tube
What are the semicircular canals responsible for?
Balance and spatial orientation
What is the function of lacrimal glands?
Produce tears
What are the extrinsic muscles of the eye?
Lateral rectus, medial rectus, superior rectus, inferior rectus, inferior oblique, superior oblique
What does the fibrous tunic of the eye include?
Sclera and cornea
What is the neural tunic of the eye?
Retina (neural and pigment layer)
What is the organ of Corti?
Structure in the cochlea that contains hair cells
What is the pathway for air flow in the upper respiratory system?
What are the components of the lower respiratory system?
What type of cartilage is the thyroid cartilage?
Unpaired, hyaline
What type of epithelium is found in the trachea?
Pseudostratified ciliated columnar
What is the function of pleural fluid?
Reduces friction
Which bronchi is steeper and larger?
Right main bronchi
How many lobes does the right lung have?
3 lobes (superior, middle, inferior)
What is the function of alveoli?
Gas exchange
What are the layers of the heart?
What separates the atria in the heart?
Interatrial groove
What is the function of the SA node?
Pacemaker of the heart
What do papillary muscles do?
Support the AV valves
What is the coronary sinus?
Drains blood from the heart muscle
What type of muscle tissue is found in the myocardium?
Cardiac muscle
What is the purpose of cordae tendineae?
Connects papillary muscles to AV valves
What are the branches of the left coronary artery?
What is the function of nodal cells?
Conduct electrical signals in the heart
What is the function of the coronary sinus?
Drains blood from the heart muscle into the right atrium
What are the AV values?
Ring of connective tissue, cusps
What are cordae tendineae?
Tendinous cords that connect papillary muscles to heart valves
What are nodal cells?
Cells in the heart that regulate heartbeat: SA node, AV node
What is Bachmann's bundle?
A pathway for electrical conduction between the atria
What do Purkinje fibers do?
Conduct electrical impulses to the ventricles
What percentage of blood is plasma?
55%
What are the primary structures of the lymphatic system?
Thymus, red bone marrow, pharyngeal tonsil
What types of lymphocytes are present in the lymphatic system?
B cells, T cells, NK cells
What is the function of lymph nodes?
Filter lymph and house immune cells
What do erythrocytes do?
Transport oxygen using hemoglobin
What is the role of platelets?
Involved in blood clotting
What are the three layers of blood vessels?
Tunica intima, tunica media, tunica adventitia
What is the function of vasa vasorum?
Supply blood to the walls of larger blood vessels
What is the function of the thoracic duct?
Drains lymph from the lower body and left side of the upper body
What is the function of the spleen?
Filters blood and recycles iron from erythrocytes
What is the composition of blood?
45% formed elements, 55% plasma
What are granulocytes?
Neutrophils, eosinophils, basophils
What is the function of monocytes?
Large phagocytic cells that engulf pathogens
What is the role of albumin in blood?
Maintains osmotic pressure and transports substances
What are thymic lobes?
Left and right lobes of the thymus gland
What is the function of the internal carotid artery?
Supplies blood to the brain
What do neutrophils do?
Engulf and digest pathogens
What is the function of the facial artery?
Supplies blood to the face
What are the pleated folds in the endothelial lining?
They are present in elastic arteries but absent in other types of arteries.
What do the one-way valves in veins prevent?
They prevent backflow of blood.
What are pooling vessels?
They act as blood reservoirs.
What is the difference between elastic and muscular arteries?
Elastic arteries have elastic membranes, while muscular arteries have a thicker media.
What is the thickest layer in veins?
The tunica adventitia is the thickest layer in veins.
What type of arteries control blood flow?
Arterioles control blood flow.
What are the three types of capillaries?
Continuous, fenestrated, and sinusoids.
What is the function of the ductus venosus?
It bypasses the liver in fetal circulation.
What does the foramen ovale do?
It bypasses the lungs in fetal circulation.
What is the ductus arteriosus?
It connects the pulmonary artery to the aorta, bypassing the lungs.
What are the sagittal, coronal, and transverse planes?
They are anatomical planes used to describe body orientation.
What is circumduction?
It is a circular movement of a body part.
What does pronation refer to?
It refers to the rotation of the forearm so that the palm faces downwards.
What is adduction?
It is the movement of a body part toward the midline of the body.
What is the difference between ipsilateral and contralateral?
Ipsilateral means same side of the body; contralateral means opposite side.
What are the types of connective tissue mentioned?
Loose, dense regular, dense irregular, and elastic connective tissues.
What is the structure of compact bone?
It consists of osteons, central canals, and lamellae.
What are striations in muscle fibers?
They are the alternating light and dark bands seen in skeletal muscle.
What are the types of muscle cells?
What are the features of cardiac muscle cells?
What are the layers of the skin?
What are the types of epithelial tissue?
What structures are associated with hair follicles?
What are the parts of the outer ear?
What are the components of the middle ear?
What are the ossicles in the middle ear?
What structures are found in the inner ear?
What is the function of hair cells in the ear?
What are the chambers of the cochlea?
What structures are found in the organ of Corti?
What are the parts of a hair cell?
What is the organ of hearing in the cochlea?
Organ of Corti
What fills the anterior chamber of the eye?
Aqueous humor
Which muscle moves the eye upward?
Superior rectus
What is the function of the iris?
Controls the size of the pupil
What is the sclera?
The white outer coat of the eyeball
What is the function of the choroid?
Provides nourishment to the outer layers of the retina
What is the structure that connects the nasopharynx to the middle ear?
Eustachian tube
Where is the vocal fold located?
In the larynx
What is the function of the epiglottis?
Prevents food from entering the trachea
What are the parts of the respiratory system?
What is the function of the nasal conchae?
Increase the surface area of the nasal cavity
What are the sinuses in the skull?
What is the opening of the nasolacrimal duct?
Drains tears into the nasal cavity
What is the primary function of the trachea?
Conducts air to the lungs
What are the lobes of the right lung?
What is the function of the ciliary body?
Controls lens shape for focusing
What is the function of the lacrimal gland?
Produces tears
What is the function of the retina?
Converts light into neural signals
What is the main artery supplying the head and neck?
Common carotid artery
What is the function of the bronchioles?
Conduct air to the alveoli
What are the parts of the larynx?
What are the two types of vena cava?
What is the main artery that carries blood away from the heart?
Aorta
What is the function of the pulmonary trunk?
Carries deoxygenated blood from the heart to the lungs
What are the formed elements of blood?
What is the composition of plasma?
What are the major plasma electrolytes?
What is the function of albumins in plasma?
Contribute to osmotic pressure and transport lipids
What is the average diameter of large veins like the vena cavae?
About 2 cm
What is the average wall thickness of large veins?
About 2 mm
What distinguishes medium-sized veins from large veins?
Thinner media with fewer smooth muscle cells
What are venules?
Smallest veins that collect blood from capillaries
What are fenestrated capillaries?
Capillaries with pores in their walls for increased permeability
What is the internal elastic membrane?
A network of elastic fibers between the intima and media of blood vessels
What is the function of the moderator band?
Conducts electrical impulses in the heart's right ventricle
What are trabeculae carneae?
Muscular ridges in the ventricles of the heart
What is the average luminal diameter of elastic arteries?
1.5 cm
What is the wall thickness of elastic arteries?
1 mm
What do muscular arteries have more of compared to elastic arteries?
A greater percentage of smooth muscle cells
What is the average luminal diameter of muscular arteries?
4 mm
What is the average luminal diameter of arterioles?
30 µm
What is the wall thickness of arterioles?
6 µm
What do continuous capillaries have that surrounds their lumen?
An endothelium that completely surrounds the lumen
What connects the endothelial cells in continuous capillaries?
Tight junctions and desmosomes
What supplies the muscles and skin of the chest and abdomen?
Lateral thoracic artery
What artery supplies the spinal cord and cervical vertebrae on the right side?
Vertebral artery
What forms the basilar artery after entering the cranium?
Vertebral arteries fuse with left vertebral
What is the function of the Circle of Willis?
It provides collateral circulation to the brain
What are the branches of the Circle of Willis?
Anterior communicating, anterior cerebral, internal carotid, middle cerebral, posterior cerebral
What vein is a major superficial vein in the leg?
Great saphenous vein
What is the function of collateral arteries?
To provide more blood supply when needed
What are the types of body movements?
What are the types of ventral cavity membranes?
What is the structural organization of the body?
What are the abdominal regions?
What are the abdominal quadrants?
What does the middle ear consist of?
Tympanic cavity, auditory ossicles (malleus, incus, stapes), auditory tube
What are the extrinsic muscles of the eye?
Lateral rectus, medial rectus, superior rectus, inferior rectus, inferior oblique, superior oblique
What is the pathway for air flow in the upper respiratory system?
What are the components of the lower respiratory system?
What are the branches of the left coronary artery?
What is the function of the coronary sinus?
Drains blood from the heart muscle into the right atrium
What is the function of the thoracic duct?
Drains lymph from the lower body and left side of the upper body
What are the pleated folds in the endothelial lining?
They are present in elastic arteries but absent in other types of arteries.
What is the difference between elastic and muscular arteries?
Elastic arteries have elastic membranes, while muscular arteries have a thicker media.
What are the sagittal, coronal, and transverse planes?
They are anatomical planes used to describe body orientation.
What does pronation refer to?
It refers to the rotation of the forearm so that the palm faces downwards.
What is the difference between ipsilateral and contralateral?
Ipsilateral means same side of the body; contralateral means opposite side.
What are the types of connective tissue mentioned?
Loose, dense regular, dense irregular, and elastic connective tissues.
What are striations in muscle fibers?
They are the alternating light and dark bands seen in skeletal muscle.
What are the types of epithelial tissue?
What structures are associated with hair follicles?
What structures are found in the organ of Corti?
What is the composition of plasma?
What distinguishes medium-sized veins from large veins?
Thinner media with fewer smooth muscle cells
What is the internal elastic membrane?
A network of elastic fibers between the intima and media of blood vessels
What is the function of the moderator band?
Conducts electrical impulses in the heart's right ventricle
What do muscular arteries have more of compared to elastic arteries?
A greater percentage of smooth muscle cells
What do continuous capillaries have that surrounds their lumen?
An endothelium that completely surrounds the lumen
What forms the basilar artery after entering the cranium?
Vertebral arteries fuse with left vertebral
What are the branches of the Circle of Willis?
Anterior communicating, anterior cerebral, internal carotid, middle cerebral, posterior cerebral
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