Displaying articles by tag: Zoology Notes

BS Media in Zoology
Tuesday, 30 May 2017 20:17

FUNCTIONAL ANATOMY: ENDOCRINE GLANDS

    GLAND POSITION HORMONE FUNCTION DISEASES OFHYPER/         HYPO SECRETION 1.   Pineal body (Epiphysis) ondiencephalon melatonin delay the sexual development   2. Pituitary (anterior) Pituitary middle lobe Pituitary posterior lobe below the hypothalamus 1.  A.C.T.H 2.  T.S.H 3.  S.T.H (growth hormone) 4.  F.S.H 5.  L.H. (I.C.S.H) 6.  L.T.H. (prolactin) stimulates cortex of adrenal…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Functional Anatomy
  • Endocrine Glands
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BS Media in Zoology
Tuesday, 30 May 2017 17:25

ENDOCRINE GLANDS

The study of endocrine glands and their hormones is called "endocrinology". All hormones are not always proteins. Based on the components, hormones are classified into four types.

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Endocrine Glands
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BS Media in Zoology
Monday, 29 May 2017 19:15

ENDOCRINE SYSTEM

The glands are secretory in function. The glands are of two types, viz., exocrine and endocrine glands. The secretions of endocrine glands are called "hormones". The hormones do not pass through ducts, hence the glands are also called "ductless glands". But hormones are distributed to the various organs through the…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Endocrine System
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BS Media in Zoology
Monday, 29 May 2017 18:41 Featured

PRODUCTION, TRANSMISSION AND PROPAGATION OF NERVE IMPULSE

NERVE IMPULSES   The functions of neuron are irritability and conduction. Irritability is the response of an organism to the stimulus. Conduction is the transmission of nerve impulse through the neurons of sensory and motor nerves. The external stimuli are light, temperature, chemicals, electricity, sound, taste etc. These are first…

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  • Zoology Notes
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BS Media in Zoology
Monday, 29 May 2017 18:19

REFLEX ACTIONS AND REFLEX ARC

REFLEX ACTION: The voluntary activities that occur with out knowing or that occur involuntarily without the intervention of the centres of brain are called refiex actions.   Reflex actions are useful to animal because they bring about quick action in response to a stimulus. Many reflex action (spinal reflexes) relieve…

  • Zoology
  • Zoology Notes
  • Notes
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  • Reflex Actions
  • Reflex Arc
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BS Media in Zoology
Monday, 29 May 2017 17:50

AUTONOMOUS NERVOUS SYSTEM, SYMPATHETIC NERVOUS SYSTEM AND PARASYMPATHETIC NERVOUS SYSTEM

AUTONOMOUS NERVOUS SYSTEM The name autonomous (Gr. autos = self, nomos = governing) indicates that it is a self-governing nervous system. It is a partly independent system. It is not under the voluntary control of nervous system. The activities of some of the organs which are not under the control…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Nervous System in Rabbit
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BS Media in Zoology
Monday, 29 May 2017 17:01

SPINAL NERVES IN RABBIT

The nerves arising from the spinal cord are called spinal nerves. There are 37 pairs of spinal nerves in Rabbit. Each spinal nerve arises from the spinal cord by two roots, a dorsal or sensory root and a ventral or motor root. These roots unite to form a nerve. The…

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  • Zoology Notes
  • Notes
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  • Spinal Nerves in Rabbit
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BS Media in Zoology
Monday, 29 May 2017 16:36

CRANIAL NERVES IN RABBIT

In Rabbit there are 12 pairs of cranial nerves.   I. OLFACTORY NERVE:   This is a sensory nerve arising from the anterior end of the olfactory lobe and innervates neurosensory cells of olfactory chamber. Olfactory impulses are conducted to the brain from nasal sac through this nerve.   II.…

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  • Zoology Notes
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  • Cranial Nerves in Rabbit
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BS Media in Zoology
Monday, 29 May 2017 16:20

RABBIT (MAMMALS) CRANIAL NERVES AND THEIR NAMES ORIGIN, NATURE, AND DISTRIBUTION

SI. Name of the No. Cranial nerve Branches Nature Origin Distribution 1. Olfactory nerve — Purely somatic sensory nerve. Anterior end of olfactory lobe. Mucous membrane of the nasal sacs. 2. Optic nerve — Purely somatic sensory nerve. Ventro-lateral part of the optic lobe Retina of the eye. 3. Occulomotor…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Cranial Nerves in Rabbit
  • Nature of Cranial Nerve in Rabbit
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BS Media in Zoology
Monday, 29 May 2017 16:05

SPINAL CORD IN RABBIT

The spinal cord is the second part of central nervous system. The medulla oblongata is continued behind into a spinal cord. It comes out through foramen of magnum and runs through neural canal of vertebral column. Just like brain the spinal cord is also covered by three meninges viz., outer…

  • Spinal Cord in Rabbit
  • Zoology
  • Zoology Notes
  • Notes
  • Article
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BS Media in Zoology
Monday, 29 May 2017 15:32

STRUCTURE AND FUNCTIONS OF RABBIT BRAIN

It is the main part of the nervous system. The brain lies in a protective bony box, called cranium. The brain is the anterior part of centrai nevous system, lies in the head. It is derived from embryonic ectoderm. The structural and funcitonal units of the brian are neurons.  …

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  • Zoology Notes
  • Notes
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  • Function of Rabbit Brain
  • Structure of Rabbit Brain
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BS Media in Zoology
Monday, 29 May 2017 14:35

NERVOUS SYSTEM OF RABBIT

CENTRAL NERVOUS SYSTEM PERIPHERAL NERVOUS SYSTEM AUTONOMOUS NERVOUS SYSTEM   All the functions of any organism are regulated and integrated by the nervous system.All the systems are coordinated with one another to perform normal functioning of the body. This co-ordination is by two systems. They are nervous and endocrine systems.…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Nervous System of Rabbit
  • Nervous System in Rabbit
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BS Media in Zoology
Monday, 29 May 2017 11:33

COMPARATIVE ANATOMY: UROGENITAL ORGANS OF RABBIT AND FROG

REPRODUCTIVE SYSTEM OF MALE RABBIT AND FROG RABBIT FROG 1. Sexual dimorphism is well marked due to presence of penis and scrotal sacs containing tests only in male. 1. Not distinct. However, in male frog, base of first inner finger forms a thick nuptial pad during breeding season to clasp…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Comparative Anatomy
  • Urogenital Organs of Frog and Rabbit
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BS Media in Zoology
Monday, 29 May 2017 09:56

EMBRYO DEVELOPMENT OF RABBIT

FERTILISATION   After ovulation, secondary oocyte is taken into the fallopian tube (oviduct) where it fuses with a sperm received during copulation. Thus fertilization is internal. An unusual feature is that an entire sperm enters the cytoplasm of oocyte. Tail of sperms however, soon disintegrates. The haploid male and female…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Development of Rabbit Embryo
  • Embryo Development of Rabbit
  • Development of Embryo in Rabbit
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BS Media in Zoology
Sunday, 28 May 2017 18:04

REPRODUCTIVE SYSTEM OF FEMALE RABBIT

The female reproductive organs include a pair of ovaries, a pair of oviducts, a pair of uteri, vagina, vestibule, clitoris and some accessory glands. 1. OVARIES The two ovaries are small, whitish, oval bodies, about 2 cm long. They are found behind the kidneys, each ovary attached to the dorsal…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Reproductive System of Rabbit
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BS Media in Zoology
Sunday, 28 May 2017 17:08

REPRODUCTIVE SYSTEM OF MALE RABBIT

In rabbit the sexes are separate i.e. unisexual and sexual dimorphism is well marked. The male reproductive organs include a pair of testes, a pair of epididymes, a pair of vasa deferentia, urethra, penis and some accessory glands.

  • Zoology
  • Zoology Notes
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  • Notes
  • Reproductive System of Rabbit
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