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166 Cards in this Set

  • Front
  • Back

Receptive fields


Area which stimulation leads to response

Retinal ganglion cells

Cells have receptive fields with a center and antagonistic surrounds (output, firing action potentials)

Geniculostriate system

Major visual projection for mammals


Cribiform plate

Separate nose and brain

Olfactory is in

The cranial nerve

Collection of neurons at an integration site

Centralization

Collection of nervous structure and function at the head

Cephalization

Central nervous system consists of

The brain and spinal cord

Peripheral nervous system is

The sensory and motor neurons that connect the CNS to the body

White matter

Myelin, tracks, myelinated axons

Grey matter

Cell bodies

What are the brain planes

Coronal (bread slicing), Sagittal (cut long), Cross sectional (up or down)

Organization of brain (general)

Cortex (outer brain), medulla (inner layer)

Fore brain

Telencephalon and diencephalon

Mid brain

Mesencephalon

Hindbrain

Metancephalon and myelencephalon

Increase folds without increasing size

Cerebral cortex

Cerebral cortex includes

Localization of function, size matters (more neurons more folds), maps (homunculus-sensory and motor input), expanded forebrain, plasticity of neural cells

Peripheral nervous system is the

Somatic and autonomic

Somatic

Striated skeletal muscle and sensory receptors

Autonomic

Cardiac, smooth muscle.


1- sympathetic


2- parasympathetic


3- enteric (inside gut)

Sympathetic is

Fight or flight

Parasympathetic is

Rest and digest

Somatic and autonomic, how many neurons?

Somatic- single neuron relay


Autonomic- two neuron relay

Preganglionic neuron

Neuron that exits the spinal cord

Autonomic ganglia are

Synapses between the first and second neurons

Post ganglionic neurons are

The neurons from the ganglia to the effectors

Sympathetic ganglia are

By spinal cord, exit from lumbar regions (short to long)

Parasympathetic ganglia are

Near targets. Exit spinal cord from cranial and sacral regions (long to short)

Horomones for sympathetic and parasympathetic

Sympathetic- epinephrine


Parasympathetic- acetylcholine

Period of time is

Between a particular rhythm and the next

Zeitgiber (time giver) is

Environmental cue. "Free running rhythm" when cue is removed

Suprachiasmatic nuclei

Internal clock (circadian clock), indogenous rhythm

What are slow and broadcast

Endocrine and neuroendocrine cells

Non neuronal endocrine cells

Epithelial cell derived

Neurosecretory endocrine cells are

Modified neurons

Steroid horomones are

Derived from cholesterol, lipid soluble

Peptide and protein horomones are

Structured chains of amino acids

Amine horomones are

Modified amino acids, water soluble

Intracellular receptors bind

Lipid soluble receptorts

G-protein coupled receptors bind

Water soluble horomones

Enzyme linked membrane receptors bind

Water soluble horomones

POMC

Peptide/protein hormone made as part of a pre hormone. Carry out post-translational processing to generate the hormone

What are the endocrine glands

Pituitary, adrenal, thyroid, pan tease, gonads

Posterior pituitary gland

Down growth of hypothalamus, neural control of neurosecretory cells

Anterior pituitary

Derived from the palate, neurosecretory control of endocrine cells

Posterior pituitary parts

Median eminence, infundibular stalk, pars nervoua

Anterior pituitary parts

Pars tuberalis, pars distalis, pars intermedia

The hormones of the hypothalamus

Inhibit or release, tropic hormones control other endocrine glands

Semelparous reproduction

One time then death

Iteroparous reproductikn

Many reproductive events

Monotreme mammals

Lay eggs

Marsupial mammals

Immature young in pouch

Eutherian mammals

Placental mammals

Eutherian menstruate

Shed uterine lining

Eutherian estrus

Re absorb uterine lining

Ovary phases

1) follicular phase- early/late, oocyte primary to mature


2) luteal phase- degenerate/ mature corpus luteum


3) LHS- key to oogenesis


4) corpus luteum- supports pregnancy

LH

Luteinizing hormone, estrodial drives surge.

FSH

Follicle- stimulating hormone

The adrenal cortex parts

Zona reticularis- sex hormone


Zona fasciculata- glucocorticoids


Zona glomerulosa- amine hormones

Follicular phase

Menses and proliferative

Luteal phase

Secretory, progesterone

What do leydig cells make

Testosterone

What do steroli cells do (FSH)

Support and regulate spermatogenesis

What are the spinal reflexes

Stretch and flexing

Stretch reflex

1a sensory neuron


Extrafusial (working) muscle


Intrafusial (nonworking) muscle


Muscle spindles (proprioceptors)

1a sensory neuron

Largest sensory neuron, sends information (extensor muscles). Alpha motor neuron on many muscles.

Flexion reflex

Withdraw reflex, load compensation, descending pathways from brain (input) from 1a afferents and flexion-reflex afferents

Peripheral control rhythmic movements

Each movement activates receptors that trigger the next movements

Central control rhythmic movement

Neural circuit in CNS that generates sequential and patterned activation of


Motor neurons

Hormonal axis is

Secretions of one endocrine gland acting on another in sequence

The cerebral cortex

Primary motor cortex and premotor cortex, cerebellum, basal ganglia

Primary motor cortex

Movement and muscle coordination

Premotor cortex

Appropriate movement

The cerebellum

Detection of motor error (smooth movement)

Basal ganglia

Suppress unwanted movement

The m-line and z-disc

Anchor myosin and actin

Z is for, and m is for

Z (actin)


M (myosin)

Titan and nebulin align contractile proteins.

Titan: z-disc to m-line


Nebulin- z-disc to end of actin

Muslim heads have

ATP released with Ca2+

Synergism

One hormone amplifies the affects of the other

Permissiveness

One hormone must be present for the other to excert its effects

Anyagonism

One hormone opposes the action of the other

Gonadotropins

LH and FSH (from pituitary)

Diabetes type 1

Autoimmune disease

Diabetes type 2

Insulin resistance

Gestational diabetes

Predictor of type 2

The hormones of the hypothalamus

Inhibit or release, tropic hormones control other endocrine glands

Semelparous reproduction

One time then death

Iteroparous reproductikn

Many reproductive events

Monotreme mammals

Lay eggs

Marsupial mammals

Immature young in pouch

Antagonism

One hormone opposes the action of the other

Eutherian menstruate

Shed uterine lining

Eutherian estrus

Re absorb uterine lining

Ovary phases

1) follicular phase- early/late, oocyte primary to mature


2) luteal phase- degenerate/ mature corpus luteum


3) LHS- key to oogenesis


4) corpus luteum- supports pregnancy

LH

Luteinizing hormone, estrodial drives surge.

FSH

Follicle- stimulating hormone

The adrenal cortex parts

Zona reticularis- sex hormone


Zona fasciculata- glucocorticoids


Zona glomerulosa- amine hormones

Follicular phase

Menses and proliferative

Luteal phase

Secretory, progesterone

What do leydig cells make

Testosterone

What do steroli cells do (FSH)

Support and regulate spermatogenesis

What are the spinal reflexes

Stretch and flexing

Stretch reflex

1a sensory neuron


Extrafusial (working) muscle


Intrafusial (nonworking) muscle


Muscle spindles (proprioceptors)

1a sensory neuron

Largest sensory neuron, sends information (extensor muscles). Alpha motor neuron on many muscles.

Flexion reflex

Withdraw reflex, load compensation, descending pathways from brain (input) from 1a afferents and flexion-reflex afferents

Peripheral control rhythmic movements

Each movement activates receptors that trigger the next movements

Central control rhythmic movement

Neural circuit in CNS that generates sequential and patterned activation of


Motor neurons

What do leydig cells make (LH)

Testosterone

The cerebral cortex

Primary motor cortex and premotor cortex, cerebellum, basal ganglia

Primary motor cortex

Movement and muscle coordination

Premotor cortex

Appropriate movement

The cerebellum

Detection of motor error (smooth movement)

Basal ganglia

Suppress unwanted movement

The m-line and z-disc

Anchor myosin and actin

Z is for, and m is for

Z (actin)


M (myosin)

Titan and nebulin align contractile proteins.

Titan: z-disc to m-line


Nebulin- z-disc to end of actin

Muslim heads have

ATP released with Ca2+

Tropomyosin follows binding sites and blocks them

Troponin has bindings sites for Ca2+ and shifts tropomyosin

Synergism

One hormone amplifies the affects of the other

Vertebrate skeletal muscle

Structure

Isometric contraction

Tension

Isotonic contraction

Changes in length

What is tension

The force exerted on a load by a unit of cross sectional area of the muscle

Myosin heads have

ATP released with Ca2+

What is a motor unit

Number of muscle fibers an alpha motor neuron innervates

Vertebrate skeletal muscle

Structure

Gas exchange fusion and bulk flow

Fusion- skin/lungs


Bulk flow- into system

Pv=nRT

Ideal gas law (partial pressure in chamber)

Cx=APx

Henry's law (gas partial pressure in aqueous solution)

Permissiveness

One hormone must be present for the other to excert its effects

What phase does gas dissolve quickest in

Aqueous

What is resting tidal volume

~500 ml (12% new air)

What is ventilation powered by

The diaphragm and intercostals

What is the diaphram

Sheet of connective tissue that completely separated thorasic from abdominal cavities

The expansion of the thorasic cavity is called

Contraction

What are intercostals

Muscles that run b/w adjacent rins and abdominal muscles

What is the fountainhead of breathing

Medulla oblongata

What are direct effects of excersize

Coordination of breathing and limb movements

What are pulmonary surfactats

Phospholipids that prevent water molecules from attracting each ither

Blood CO2

Dissolved- 7%


Bound to hemoglobin- 23%


As bicarbonate- 70%

Anyagonism

One hormone opposes the action of the other

Hemoglobin unloading

At rest- 25%


Excersizing- 65%

What does the affinity for hemoglobin for O2 depend om

The partial pressure of CO2 and pH

What is the Bohr effect

As P(CO2) increases, pH decreases

The Bohr effect is adaptive because

It facilitates deoxygenate in of Hb at the tissues

Why are the atria of the heart very small

B/c of velocity needed to pump blood

Muscle of the heart is

Striated, uninucleated, myofibers organized into sarcomeres. Branched.

Intercalated discs b/w adjacent discs inclide

Gap junctions (electrical coupling) and desmosomes (mechanical strength)

Fibrous tissues in the heart

Breaks up gap junctions and must go through the Atrioventrical node to ventricles

Why does the Atrioventrical node have a delayed response

To avoid aorta and ventricles beating together

Anastomosis

Bypass capillaries

Gonadotropins

LH and FSH (from pituitary)

Kidney functions

Water balance, regulate solutes, excrete waste

Steps for urine production

1) ultra filtration


2) secretion


3) reabsorption

What is Glomerulus

Capillary network in capsule

Glomerulus in aquatic and terrestrial species

Aquatic- more sunken into kidney


Terrestrial- more concentrated urine, less sunken

Gas exchange currents from best to least

Countercurrent, cross current, cocurrent, tidal

Concentrated urine

Goes down a gradient

Loop of Henley

Back (Definition)

Diabetes type 1

Autoimmune disease

Diabetes type 2

Insulin resistance

Loop of Henley

Back (Definition)

Muscle contraction pathway

Rigor > atp to adp p(i) > bind to g-cell > powerstroke goes to M line > bind site breaks

Sliding filament theory

Myosin and actin "sliding" past one another