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Human Physiology - Biology Questions asked by Filo students

Question 3961

is pivoted at the centre. In the equilibrium position shown in the figure, the identical light springs have their natural length. If the stick is turned through a small angle

θ

, it executes SHM. The frequency of the motion is: (1)

\frac{1}{2 π} \frac{6 K}{m}

(2)

\frac{1}{2 π} \frac{3 K}{2 m}

(3)

\frac{1}{2 π} \frac{3 K}{m}

Topic:

Human Physiology

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Question 3962

____is the end product of carbohydrate digestion.

Topic:

Human Physiology

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Question 3963

, 9.2.2 The Pituitary (fiec pituitary gland is located in a bony cavity alled sella tursica and is attached to iv pothalamus by a stalk (Figure 19.2). It is givded anatomically into an adenohypophysis and a neurohypophysis. Adenohypophysis consists of two portions, pars distalis and pars intermedia. The pars distalis region of pituitary, commonly called anterior pituitary, produces growth hormone (GH), prolactin (PRL), thyroid stimulating hormone (TSH), adrenocorticotrophic hormone (ACTH), luteinizing hormone (LH) and follicle stimulating hormone (FSH). Pars intermedia secretes only one hormone called melanocyte stimulating hormone (MSH). However, in humans, the pars intermedia is almost merged with pars distalis. Neurohypophysis (pars nervosa) also known as posterior pituitary, stores and releases two hormones called oxytocin and vasopressin, which are actually synthesised by the hypothalamus and are transported axonally to neurohypophysis. Over-secretion of GH stimulates abnormal growth of the body leading to gigantism and low secretion of GH results in stunted growth resulting in pituitary dwarfism. Excess secretion of growth hormone in adults especially in middle age can result in severe disfigurement (especially of the face) called Acromegaly, which may lead to serious complications. and premature death if unchecked. The disease is hard to diagnose in the early stages and often goes undetected for many years. until changes in external features become noticeable. Prolactin regulates the growth of the mammary glands and formation of milk in them. TSH stimulates the synthesis and secretion of thyroid hormones from the thyroid gland. ACTH stimulates the synthesis and secretion of steroid hormones called glucocorticoids from the adrenal cortex. LH and FSH stimulate gonadal activity and hence are called gonadotrophins. In males, LH stimulates the synthesis and secretion of hormones called androgens from testis. In males. FSH and androgens regulate spermatogenesis. In females, LH induces ovulation of fully mature follicles (graafian follicles) and maintains the corrpus luteum. formed from the remnants of the grafian follicles after ovulation. FSH stimulates growth and development of the ovarian

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Human Physiology

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Question 3964

Is the force contraction of muscle fibre dependent on the strength of stimulus

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Human Physiology

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Question 3965

Islets of Langerhans are patches of endocrine cells in :a. Liver b. Pancreas c. Kidney d. Stomach

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Human Physiology

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Question 3966

It is produced due to irregularity in metabolism of nitrogenous waste a. Osteoarthritis b. Rheumatoid arthritis c. Osteoporosis d. Gouty arthritis

Topic:

Human Physiology

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Question 3967

Biology class 11 chapter name reproduction

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Human Physiology

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Question 3968

Explain Transmission of impulses in detail

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Human Physiology

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Question 3969

(2020)

\#Q. The plant parts which consist of 'two' generations one within the other: *. Pollen grains inside the anther X Germinated pollen grain with two male gametes \&. Seed inside the fruit 4. Embryo šac inside the ov̌ule 1 (1), (2) and (3) 2 (3) and (4)

3 (1)

and (4) 4 (2) (1) only

Topic:

Human Physiology

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Question 3970

(2020)

\#Q. The plant parts which consist of 'two' generations one within the other: ※. Pollen grains inside the anther \& Germinated pollen grain with two male gametes \& Seed inside the fruit 4. Embryo šac inside the ov̌ule 1 (1), (2) and (3) 2 (3) and (4)

3/ (1)

and (4) 4 (2) (1) only

Topic:

Human Physiology

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Question 3971

ओजन सीस किया है ?

Topic:

Human Physiology

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Question 3972

\to

यदि मनुष्य मे

\infty

दो कृदीव हज्य पाया जाएँ तो निम्न मे से क्या जाए तो तिम्न मे से क्या होगा। (a) रव्त कोरिएकाओ से मोजन की आपर्ई करने मे असमर्र (b) कोरिकाओ को आक्सीजन नही पच्चेजी (c) सिर तथा गीवा की खक्त नी पंछ्ये (c) कोई ख्त्त परिसचंख नही होगा।

Topic:

Human Physiology

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Question 3973

The blood flows strictly by a fixed route through Blood Vessels-the arteries and veins. Basically, each artery and vein consists of three layers: an inner lining of squamous endothelium, the tunica intima, a middle layer of smooth muscle and elastic fibres, the tunica media, and an external layer of fibrous connective tissue with collagen fibres, the tunica externa. The tunica media is comparatively thin in the veins (Figure

Topic:

Human Physiology

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Question 3974

Review Teacher asked some students the reason for different chambers of human heart. Who amongst them gave the correct answer? Only one correct answer A. Rohit - It allows contraction of the chambers B. Nitesh - It prohibits transportation of blood into the arteries C. Divya - It prevents the heart from external shock Anshu - It prevents the oxygen-rich D. blood from mixing with the carbon dioxide rich blood

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Human Physiology

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Question 3975

Can we say that mesoderm of blastocyst and iner mass cell same

Topic:

Human Physiology

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Question 3976

9.Study the following diagram : (5) Fig. Nephron (a) Label the parts

a, b

and

c

in the above diagram of a nephron also write one function of each. (b) Name the cells forming the inner lining of Bowman's capsule. (c) What is the value of Glomerular fillration rate of a healthy person?

Topic:

Human Physiology

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Question 3977

9.Study the following diagram : Fig. Nephron (a) Label the parts

a, b

and

c

in the above diagram

Topic:

Human Physiology

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Question 3978

How is

CO_{2}^{and} O_{2}

transported in human beings? (3)

Topic:

Human Physiology

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Question 3979

Low levels of progesterone leads to

proliferating phase
leutal phase
menstruation phase
dormant phase

Topic:

Human Physiology

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Question 3980

Joint between metacarpals and phalanges isa. Ball and socket b. Pivot c. Saddle d. Hinge

Topic:

Human Physiology

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