Heart beats are accelerated by

Heart beats are accelerated by

Options

(a) cranial nerves and acetylcholine (b) cranial nerves and adrenaline (c) sympathetic nerves and acetylcholine (d) sympathetic nerves and ephinephrine

Correct Answer:

sympathetic nerves and ephinephrine

Explanation: […]

Renal portal system is absent in

Renal portal system is absent in

Options

(a) reptiles (b) amphibians (c) reptiles and amphibians (d) birds

Correct Answer:

birds

Explanation:

No explanation available. Be the first to write the explanation for this […]

Athletes generally suffer from

Athletes generally suffer from

Options

(a) tachycardia (b) bradycardia (c) dyspnoea (d) cardiac arrythmias

Correct Answer:

bradycardia

Explanation:

No explanation available. Be the first to write the explanation for this question by […]

Lymphoid tissue is found in

Lymphoid tissue is found in

Options

(a) lymph nodes (b) thymus (c) tonsils (d) all of these

Correct Answer:

all of these

Explanation:

No explanation available. Be the first to write the explanation […]

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