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Vert Anat. Test 3
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58
Biology
Undergraduate 4
11/02/2010

Additional Biology Flashcards

 


 

Cards

Term
Endocrine System
Definition
Ductless glands use hormones to coordinate body functions, chemically.
Term
Hormone Composition
Definition
Most are amino acids annd some are steroids.
Term
Hypothalamus
Definition
Neuroendocrine Center controling activites of major endocrine glands.
Term
Neuroendocrine Center produces neurohormones (2)
Definition
ADH, oxytocin
Term
Hypothalamus produces neuro-secretions (2)
Definition
RHs (releasing hormones) and IHs (inhibiting hormones)
Term
Tropic hormones
Definition
Released by anterior pituitary to simulate particular endocrine gland.
Term
Lateral line canals
Definition
Mechanoreceptor organs that detect changes in water pressure
Term
Inner ear
Definition
Used primarily for balance in fish
Term
Vestibule
Definition
Utriculus, sacculus
Term
Lagena
Definition
Forms cochlea in birds and mammals enclosing sound receptors
Term
Ear ossicle of amphibians, reptiles, birds.
Definition
One ear ossicle called the columella that transmits sound vibrations. Middle ear.
Term
Ear ossicles of mammals
Definition
3 ear ossicles - malleus(hammer), incus(anvil), and stapes(strirrup). Middle ear.
Term
Origin of stapes, malleus, and incus.
Definition

stapes - second embryonic hyoid arch

malleus, incus - first embryonic hyoid arch

Term
Auditory tube
Definition
Part of middle ear - Eustachian tube for air-pressure adjustment
Term
Outer ear
Definition
Auditor meatus that ends at tympanum. Most mammals have movable pinna to trap vibrations.
Term
Lateral eye
Definition
Retina sends impulses to brain where image is formed
Term
Median eye
Definition
Sends light availability to brain, not images. Respossible for biological rhythms.
Term
Spectacle
Definition
Upper and lower eyelids are fused and transparent over cornea.
Term
Posterior pituitary gland
Definition
Neurohemal organ - cotains nerve fiber, neuroglia, and blood vessels. Acts as storage unit for hypothalamus, arginine vasotocin, and oxytocin.
Term
Arginine vasotocin
Definition
Present in fetal mammals. Turns into antidiuretic hormone (ADH).
Term
Oxytocin
Definition
Regulates uterine contractions, milk production, and maternal behavior.
Term
Anterior pituitary
Definition
Endocrine cells that produce hormones.
Term
Rathke's pouch
Definition
Bud of ectodermal cells in embryo that becomes hypothalamus and anterior pituitary.
Term
Melanophore stimulating hormone (MSH)
Definition
Causes skin color changes and appetite control.
Term
Somatotropin/GH
Definition
Body growth hormone from anterior pituitary
Term
Prolactin
Definition

Mammals - milk secretion

Fishes - biological rhythms, lipid storage, osmotic balance

Birds - nest building, egg incubation, nestling

Term
Pineal gland
Definition
Produces melatonin
Term
Melatonin
Definition
Released mostly at night. Regulates reproductive cycle.
Term
Adrenal medulla in amniotes
Definition

Inner part of adrenal gland produces hormones. Outer adrenal cortex produces steroids.

 

Term
Adrenal medulla catecholamines (2)
Definition

Epinephrine - heart stimulation

Norepinephrine - vascoconstriction

both increase blood pressure and metabolism. makes up "fight or flight".

Term
Adrenal cortex steroids produced (3)
Definition

Mineralocorticoid - Aldosterone - regulates minerals in body fluid

 

Glucocorticoid - Coritsol - regulates glucose in blood

 

Gonadocorticoid

 

Term
Adrenal cortex
Definition
Gland from mesoderm regulated by ACTH from ant. pituitary
Term
Gonadal glands (2)
Definition

Glands from mesoderm:

interstitial cells in testis - testosterone

 

ovarian folliciles in ovaries - estrogen and progesterone

Term
Thyroid hormones (3)
Definition

Thyroid hormones, T3 and T4.

 

Calcitonin - regulates blood calcium

Term
Glands derived from endoderm (4)
Definition
Thyroid, Parathyroid, Thymus, Pancreas
Term
Glands derived from mesoderm (2)
Definition
Adrenal cortex, Gonadal glands
Term
Parathyroid gland
Definition
releases PTH (parathyroid hormone) when blood calcium drops
Term
Thymus gland
Definition
Lymphoid organ producing thymosin - regulates maturation of T-lymphocytes (immune response)
Term
Pancreas
Definition
Produce Glucagon and Insulin
Term
Red bone marrow
Definition
Forms by tiny bone spicules surrounding spongy bone tissue. RBC's produced here.
Term
Axial Skeleton (3)
Definition
Skull, vertebral column, rib cage
Term
Appendicular Skeleton (2)
Definition
Limb skeleton, girdles
Term
Heterotropic bones
Definition
Do not form a joint with other bones
Term
Os cordis
Definition
Bone in septum of deer heart
Term
Bacula
Definition
Bone in penis of mouse, squirrel, dog
Term
Patella
Definition
Knee cap in birds and mammals
Term
Amphicelous
Definition
Centrum of vertebra is concave at both ends. Found in birds.
Term
Procelous
Definition
Convex at one end of centrum of vertebra. Found in anurans and reptiles.
Term
Acelous
Definition
Centrum of vertebra is flat at both ends. Found in mammals.
Term
Intervertebral discs
Definition
Cartilage discs in between vertebrae of mammals
Term
Groups of vertebrae (5)
Definition
Cervical - neck, thoracic - supports ribs, lumbar- support abdominal muscles, sacral - support pelvic girdle and hind limbs, caudal - locomotion
Term
Amphibian cervical
Definition
One cervical vertebra for two occipital condyles
Term
Mammal cervical
Definition
7 cervicle vertebrae. Atlas and axis form movable joint with two occipital condyles.
Term
Reptile & bird cervical
Definition
First 2 cervicals are modified for single occipital condyle. Saddle shape in birds allows better neck flexibility.
Term
Propodium
Definition
upper arm bones, thigh bone
Term
Epipodium
Definition
Fore arm, shank
Term
Autopodium
Definition
hands, feet
Term
Autostylic
Definition
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